@simcard78: I feel your pain.

Tab stack are back, kind of. There should be option to "Move tab to Workspace X" in somewhere.

@pepik110: I just came here to inform the same. Random crashes occurs.

@ralf-brinkmann: Excellent news. I hope next weeks version bring this to Developer version too. It would ne nice to see what kind of actual code changes this fix needed.

I'm not sure if this is related to this build but I updated my browswer with two windows open. After update the second window (which have only 3 tabs) does not allowed clicking tabs. Address bar etc. works but I cannot change tabs and tabs does not contain close x's - I could close those tabs via CTRL+W and window closed after the last one. Reopening last closed tab opened new windows and then tab contains closing button. It's weird and could be coincidence but thought to share it anyway.

@ralf-brinkmann: I think I would like this feature IF i could teach myself to use fa less tabs. I've switched from Workspaces to Tab Island but still quite a mess. I like that Opera allows many ways to arragen tabs - problem is me.

@daria19: OK. I suspect that problem was another Opera window (which had only one tab). I closed that and after that I tried this arrange method and Opera suddenly closed. Restarted with same tab-settings. But after that tried again and then it worked. If I have time I try to test can I reproduce this or not.

@pilotbilal: I totally gree the need of this feature. That should work togetger with AI grouping of tabs too.

@leocg: Still doesn't work for me. Windows 11 V23H2 (Finnish version) - "Ryhmävälitys" seems not to work. Maybe later I would try to switch language or something else.

@koimark: So the error is not erro like exception or program fault but that AI doesn't know how to proceed to actual arrangement of tabs.

@daria19: I'm doing exactly the same procedure in Windows than Mac. Right click from tab and choose "Välilehtien hallinta tekoälyllä" - "Tab management via AI" Then selecting the tab arrangement based on url "Ryhmävälitys" Ryhmitä välilehdet saariksi verkkosivuston mukaan" -> "Arrange tabs to islands based on url" or something like that.
That gives error in Windows "Hmm... En löydä välilehtiä jotka liittyvät siihen. Jos olen väärässä yritä kysyä uudelleen" translation: Hmm. I don't find tabs related to that. If I am wrong try ask again"
Here are screenshots.
https://www.dropbox.com/scl/fo/5u48eh402vz8nydn7qu3n/AIGjfM2tJ2IipTSMJUa1Gfc?rlkey=rm1ndt0pmcvq1lfys32muluct&dl=0

I noticed opportunity to use AI to arrange tabs to islands. Tested it with my Macbook Pro and it worked nicely. But in Windows that doesn't seem to do nothing. It tells somekind of error that AI doesn't find suitable tabs to that. Am I missing something?

@simcard78: I feel your pain.

@daria19: Thanks for you. I just want to have full use of my precious 20 USD student registration fee of Opera from year 2001 - I think that I started to use Opera as my main browser since 5.x.

I kind of like tab island but after arrangement it exploded immediately. I would suggest feature to "Arrange duplicates to tab island" - meaning that every urls of certain domains moved to same tab island. Or maybe some other way to arrange things. Maybe there would be need of Tab Island Organiser -addon or something.
And maybe also option to define urls (using wildcards etc) to guide where links will be opened. For example I would like to have Tab island containing IG-pages - and when I click Threads -link in IG it would be nice that this link would be opened as a tab in Threads Island. Etc. That way clutters stay away.
Pseudocode
IF link url contains instagram -> IG Tab Island
else if link url contains facebook -> FB Tab Island
else if link url contains youtube or "other streaming service" -> Media Tab Island.
(This could be mayba part of bookmarks property - so you could arragne all kind of addresses that belongs to -> Humor Tab Island etc. )
if link base url is found in bookmarks - find Tab Island information from there.

Quite many "Fix detected dangling ptr..." - it would be nice to know more. Were those caused by same component / same programmer / same situation of sunspot.