Firefox is way faster to load the already open tabs, compared to when Tabmarks is opening them. Show a notification to the user, that he should enable tab restoring from last session.

Test if it works with not opening the group's tabs in this case.

Currently, all the tabs of a group reload/ load when the group is opened.

Is it possible to prevent that from happening?

Currently using Conex add-on implemented on top of container tabs and at group switching the tabs are open in the default container instead the one that was used at switch time.

Let's say that have 2 tabs, one open in Personal container and the other one in Banking container. After switch to a different group, back and forth, both tabs are open in default container.

If it is technically possible, this would allow switching more quickly as only the active tab would load.
The Firefox pref is browser.sessionstore.restore_on_demand

Thanks

When switching between groups the tabs order changes

When clicking on a popup link ( with address "javascript:void(0);"), the opened popup is always blank and the target URL does not appear in the address bar.

When I deactivate the extension, popups are back (no need to even reload the origin page).

This looks quite like this question, so probably other extensions had the same issue :
https://support.mozilla.org/fr/questions/981169

Consider setting .toolbarbutton-badge to max-width: 40px or similar to accommodate more characters.
May need to flex other elements to ensure star icon remains centered.

See https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Chrome_incompatibilities

• extensions.css -> cross-plattform (Mac)
• Create dialog as pop up
• browserAction Badge/Title updates per Window
• Select group on browser start -> test 

If the former, please say so.
If the latter, please update th readme with your tool of choice.

See https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/bookmarks#Events

Allows users to:

• rename groups
• move tabs between groups
• delete groups

I was considering not reporting this until I had time to troubleshoot it further, but it happened again so I wanted to at least create a placeholder so others are aware of the risk (though the extension is marked experimental so I suppose this is implied).

When switching groups I have encountered a situation where the group you switched away from could somehow have its contents replaced with a copy of the group you switched to. Seems more likely when you haven't let the tabs fully load. Some kind of timing issue with all the async stuff going on? It somehow starts synchronising the new set of bookmarks before the destination folder changes?

Hopefully I can find time to dig into this a bit more and come up with a way to reliably recreate it, but this might be enough to go on?

I want to remove an group from the list, tried to close it but it didn't worked.

• Allow to create a group with the currently open tabs.
• Ask the user if it's ok to close the currently open tabs, when creating an empty group.

Allow to «close» a group such that no more group is active.

New state:

• group's tabs are closed
• a new tab is open
• browserAction shows no selected group in badge/title

See https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/i18n

Import JSON Export from TabGroups AddOn:
https://addons.mozilla.org/en-US/firefox/addon/tab-groups-panorama/