@julmari There could be several reasons why the opera icon is not showing up in the taskbar even when docked. Here are a few things you could try to troubleshoot the issue:
Restart the computer: Sometimes, a simple restart can solve the issue as it clears up any temporary glitches.
Check the taskbar settings: Make sure that the "Opera" option is not hidden in the taskbar settings. To check this, right-click on the taskbar, select "Taskbar settings," and scroll down to "Select which icons appear on the taskbar." Make sure the switch next to "Opera" is turned on.
Reinstall Opera: Try uninstalling and reinstalling Opera on your computer. This will replace any corrupt files that may be causing the issue.
Check for updates: Make sure you have the latest version of Opera installed on your computer. You can check for updates by opening Opera and going to "Menu > About Opera."
Check for conflicting software: It's possible that another program on your computer is conflicting with Opera. Try disabling any antivirus software or firewalls temporarily to see if that solves the issue.
If none of these steps work, it may be best to contact Opera support for further assistance.