Issue Description:

I am experiencing a fullscreen display issue when using the Opera browser on my Android device. Whenever I try to enter fullscreen mode (whether for YouTube videos or general browsing), only half of the screen is visible, while the other half remains black or shows part of another screen.

This issue occurs even when:

Auto-rotate is enabled, and I try using Opera in landscape mode.

I enter fullscreen on different websites, not just YouTube.

The browser is updated to the latest version from the Play Store.

Other browsers (like Chrome, Edge, Brave) do not have this problem.

Steps to Reproduce:

1. Open Opera on an Android phone.

2. Play a video on YouTube or enter fullscreen mode on any website.

3. Rotate the phone to landscape mode (if needed).

4. Observe that only half of the screen is displayed, while the other half is either black or stuck.

Troubleshooting Attempts:

I have already tried the following, but the issue persists:

Force stopping and restarting Opera.

Clearing cache and data.

Reinstalling Opera.

Trying different display settings (scaling, auto-rotate, etc.).

Disabling Hardware Acceleration in opera://flags.

Device & Software Information:

Phone Model: [Your Phone Model]

Android Version: [Your Android Version]

Opera Version: [Your Opera Version]

Expected Behavior:

When entering fullscreen mode, the entire screen should be properly utilized without any black or missing sections.

Actual Behavior:

Only half of the screen is visible, and the other half is either black or non-functional.

Additional Notes:

Since this does not happen in other browsers, it seems specific to Opera. If this is a known bug or if there is a fix, please let me know.

@leocg

This is the screenshot where you can see that opera Android have duplicate tab feature.

@leocg
Lower side of opera Android app
Button have as follows

Back , forward, home, minimise, option(settings).

This minimise button if you press for 2 sec you get option as follows

New tab
New private tab
Duplicate tab
Recent close tab
Close tab

@leocg
Ofcourse there is one.
you can check that on google search that too.
Also that duplicate tab completely copy that tab into similar tab in right side of that.
I regularly user of opera Android and mostly use this feature.

@leocg

Steps to Reproduce the Issue:

1. Open Opera for Android.

2. Go to YouTube (just the homepage, without playing a video). (By searching on Google)

3. Open any video manually and let it play.

4. Open a duplicate tab of the video (using the duplicate tab option).

5. Close the duplicate tab instead of deleting it. (The issue remains when we duplicate can not deleted the tab)

6. Leave the original YouTube tab open and switch to another app and minimize Opera (or close opera try both)

7. Return to Opera after some time (a few minutes or hours).(Here i am not sure that how much time is to take to get this issue)

8. The YouTube tab has now automatically redirected to this video: https://m.youtube.com/watch?v=maGKzRACwco.

Additional Notes:

The issue occurs only when closing the duplicate tab instead of deleting it.

Since deleting the duplicate tab completely stops the issue, it suggests a bug related to tab management (possibly involving duplicate tabs, back button behavior, or session restoration).

This happens multiple times a day under normal usage conditions.

Clearing cache/data and updating Opera does not fix the issue.

No browser extensions are involved.

@leocg
( Hey, i do not get any new redirect new page issue after i deleted the tab, so i am not sure you can produce same issue with steps but i need delete that tab only then problem get solved in my case.)
Following Steps are before i not deleted tab ( this steps are form that time )

1. Persistent Automatic Redirection to Specific YouTube Video (Opera for Android):

Issue: Inactive YouTube tabs in Opera for Android redirect to a specific video titled "[1-76] He Was An F-Rank Porter Who Regressed Back Then Became The God of Death! | Manhwa Recap Channel: ManhwaDealer."

Occurrence: This happens about 4 to 5 times daily, especially after duplicating a tab and closing the duplicate.

Source:

2. Opera Opening Itself with a Redirect Link (Android Users):

Issue: Opera automatically opens new tabs with redirect links upon unlocking the phone.

Troubleshooting Attempts: Users performed factory resets and avoided new app installations, but the issue persisted.

Source:

3. Random Advertisement Websites Opening at Browser Startup (Desktop Users):

Issue: Upon launching Opera after turning on the PC, a random tab with an advertisement website opens automatically.

Steps to Reproduce:

1. Turn off the PC.

2. Turn on the PC.

3. Open Opera.

4. A random tab with an advertisement website opens.

Source:

4. Unexpected New Tab Redirect in Opera:

Issue: New tabs in Opera automatically open to a specific URL: https://site.adform.com/privacy-center/platform-privacy/opt-out/.

Source:

5. Redirect Malware Randomly Opening New Tabs:

Issue: Browsing is disrupted by redirections to adware sites, with new tabs opening randomly.

Temporary Solution: Turning off JavaScript stops the random openings, but this is not ideal as it disrupts regular web usage.

Source:

Commonalities and Potential Causes: These issues predominantly affect Opera users on Android devices, though some desktop users have reported similar problems. The problems often involve automatic redirection to specific websites or the opening of new tabs without user initiation. Potential causes could include browser bugs, malware, or unwanted scripts running within the browser.

Steps to Reproduce the Issue (Based on User Reports):

1. For the YouTube Redirection Issue:

Open Opera for Android and navigate to YouTube.

Play any video or leave the YouTube homepage open.

Switch to another app or leave Opera inactive for some time.

Return to Opera; the tab may automatically redirect to the specific video mentioned above.

2. For Opera Opening New Tabs with Redirect Links:

Lock your Android device.

Unlock the device.

Observe if Opera opens automatically with a new tab leading to a redirect link.

@leocg i do not use other browser other then opera and chrome but chrome open youtube in their youtube app not in browser. Its upto you that you can cross check to other opera forums.

@leocg other then this everything works normal I just mantion issue detailed as possible.
But see that on internet this is Also mantion by many opera users, that in perticular tab get auto fixed or bug that every time it switch to a perticular website or webpage and also that time back button do not work. In my case this happens multiple times when i try to duplicate the tab but sence i removed the tab this not happened in last 12 hours so it the problem in tab data and back button. If we duplicate tab then same issue happened that tab again. Also the reason behind we duplicate tab is after duplicate we can use back button in that new duplicate tab and we remove old tab.

In Opera for Android, inactive YouTube tabs unexpectedly redirect to a specific video webpage without any user interaction. The affected video is titled: "[1-76] He Was An F-Rank Porter Who Regressed Back Then Became The God of Death! | Manhwa Recap Channel: ManhwaDealer" (Link: https://m.youtube.com/watch?v=maGKzRACwco). This redirection occurs frequently—about 4 to 5 times a day—whenever I leave a YouTube tab open. Additionally, the issue appears when duplicating a tab and then closing the duplicate. I have cleared the browser’s cache and data, confirmed that no updates are available for Opera on Android, and noted that the Android version does not support extensions. Based on these observations, I suspect there may be a bug in Opera for Android related to tab management functions—possibly involving duplicate tab handling, the back button functionality, or tab removal.