I really wouldn't do this. The add-on bugs out for me fairly regularly and doesn't let me interact with the tabs (like closing them). Still, I can't imagine using a browser without vertical tabs ever again.
This happens to me too. TST seems to currently be riddled with all kinds of unusual bugs that only crop up occasionally. Workarounds: Sometimes keyboard shortcuts still work when mouse interaction doesn't. Other times closing then opening the side panel again causes TST to stabilize it's state.
I'm kind of curious what browser and OS version you and the other user are running.
I'm running Firefox Nightly, which is version 66 at this point with tree style tabs 2.7.9 on auto update on linux 4.19 with intel/nvidia gpu drivers. I've never seen any issues just tree style tabs but note I only have 5 extensions at this point.
I was wondering if it was an issue with a particular platform or interaction between multiple extensions particularly if you are using the pre quantum version.
I've noticed bugs such as the new tab button stops working (command-t still works though), child tabs not being promoted to top-level tabs when their parent is closed and a few other strange cases of tree state corruption. Particularly it sometimes happens when dragging tabs around to reparent them, although I haven't been able to nail down any concrete rhyme or reason to it. My other extensions are umatrix, ublock origin and tampermonkey, I don't think there is any strange extension interaction going on.
Despite all of this, TST is still too useful to not use.
I'm kind of curious if the other user also uses mac and its an issue that firefox needs better mac support. I recall in a similar thread on hacker news others recounting having had a bad experience with firefox on mac.
Have you tried submitting a bug report to the author of TST maybe they don't have a mac and could use more feedback.
I'm kind of curious what browser and OS version you and the other user are running.
I'm running Firefox Nightly, which is version 66 at this point with tree style tabs 2.7.9 on auto update on linux 4.19 with intel/nvidia gpu drivers. I've never seen any issues just tree style tabs but note I only have 5 extensions at this point.
I was wondering if it was an issue with a particular platform or interaction between multiple extensions particularly if you are using the pre quantum version.
