@tori-ko It's not just you. It's infuriating. I had to delete 17 this morning. I submitted a bug report a couple of days ago. I know others h
ave done so too. I think (but I could be wrong) that it's something to do with how speed dial/bookmarks syncs across devices.
I am experiencing that with Opera 100.0.4815.30,
Kubuntu 22.04.2 LTS,
KDE 5.24.7,
Xorg 2:21.1.4-2ubuntu1.7~22.04.1
Of my 18 windows there are always 2 random windows stealing focus once in several minutes or so.
same problems here, opera could not remember the browser / device, new session of the same browser on same device was considered as a different browser/ device with tabs opened in last session stored in another "new device" under "syned tabs"