Version of Android: Android 10
Phone model and manufacturer: Samsung a71
Your version of Opera for Android: 60.3.3004
If ad-blocker is enabled or not: problem with and without ad blocker enabled
If data savings is enabled or not: disabled

A description of the problem, including as much as information as possible:

The past few days I've noticed that whenever I open a private tab to google something that I don't want in my search history (dumb things, extremely specific things, you-know-what) the google search history won't go away. It always used to be empty when I closed the private tabs and went back, but now they're remaining just like in my normal Google search. They even remain after closing the app and re-opening

Expected behavior and actual one: the search history should not be saved but it is