@leocg said in [Duplicated]Tab grouping (stacking) is gone?!:

There was an experimental implementation, that never worked that well,back in the Presto era and that was it

Yes you're right. I remember last trying it on Presto-based engine Opera. I my self am a very old user of Opera since back in 2006 and might have lost track of the timeline a bit. I do also recall the introduction of stacking, affected the stability of Opera for few versions. Same can be observed in Vivaldi even till now. However it doesn't seem to be a very valid point since many other Chromium based browsers have already implemented the tab grouping. Opera software has a very innovative and highly skilled developers. I doupt they are unable to implement it on Chromium-based Opera without comprimosing the stability. It's not about techincal obsticles, rather it's a decision that isn't being made for some reason.

@leocg said in [Duplicated]Tab grouping (stacking) is gone?!:

Workspaces also allow users to put together related windows, so it's already an advantage over tab stacking

If you read my initial post, I've pointed out some (of many) reasons why workspaces can't replace grouping. I can be more allaborative if you want but that takes me a relatavly longer comment.
I've tried workspaces for few days with the intention to make me believe to be back to Opera again. It's actually a nice feature. But can never be compared stacking tabs. If Workspaces is a project that company has decided to put attention on, it's all good, we welcome to have it but not for the cost of sacrificing grouping (by considering the workspace can be a qualified replacement).
I invite every one to look up the same topic on other Opera and reddit forums. Power uses like me who want it back seem to have difficulties on convincing Opera taem and forum moderators on differences of these two features and often topics are closed/locked with no consensus. Let alone the fact, that next step would be for Opera to consider to implement it.