Hello,

Interesting... so it seems that the "First Party Isolation" will isolate whole add-on (not just the new tab) into a special container - so thumbnails needs to be created in both .
This is different from "Firefox Multi-Account Containers" which isolates only a tab.

Anyway, since whole add-on is running in in isolation, there is no way to access thumbnails from different "sandbox".
The only way to fix this would be to replace the IndexedDB database used for thumbnails (which is being isolated) and replace it with normal storage. However I would have to add "Unlimited storage" permission (because thumbnails and backups usually takes more than 5MB of storage).
This is a problem because ALL of my users will be prompted to agree with a new permission.

So this is really bad.
I can also see that it breaks the cloud synchronization which is using cookie - this is also very hard to fix.

Anyway - as you can see, there is no easy solution.
The only thing I could do is introduce some "Auto create all missing thumbnails" option that will help you create missing thumbnails when you enable/disable isolation.

Best regards,
Juraj Mäsiar

Hello,

Regarding white thumbnails - the default thumbnails generation method has problems with some pages, but I'm working on a new feature that will fix it by default. Until then, just use "Refresh by visiting page" reload from context menu and it will work. Also adding new page using context menu "Add this page to dial" will also work for all pages.

Regarding "skewed with mostly white space" - could you send me the screenshot on my support e-mail?

Best regards,
Juraj Mäsiar

Hello,

You have probably the same problem as the user below.
Make sure your homepage URL ends with "/dial.html". If the URL matches the add-on URL exactly, it should be automatically cleared (empty). You can get the correct URL from the Options page / first tab / first line.

If this didn't help, please let me know to my support e-mail.

Best regards,
Juraj Mäsiar

Hello,
That option was there due to Firefox bug that got resolved in the meantime. So I removed it.
However this should not affect the URL (I mean, it can, but you should be able to fix it easily).

Just make sure your homepage URL ends with "/dial.html". If the URL matches the add-on URL exactly, it should be automatically cleared. You can get the correct URL from the Options page / first tab / first line.

If this didn't help, please let me know to my support e-mail.

Best regards,
Juraj Mäsiar

Hello,
I'm working on groups sharing feature right now. It should be part of the next release 14.0, probably in next few weeks (it's not an easy thing to do, especially for single developer). Also it will be paid feature as I'm running out of money and donations won't even cover my running costs.

Part of the the Pro version will be also real-time synchronization so your changes will be applied to all your devices and shared users instantly.
All existing features will stay free.

Best regards,
Juraj Mäsiar

Hello,

You are not alone. Firefox has some issues recently and users are loosing all add-ons data, not just in my add-on. See for example this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1530660

But there is way to recover it even if you don't have backups. Firefox in version 66 migrated all add-ons data to a new storage and during this process they created a backup file - "storage.js.migrated".
You can use this file to restore your data, see this article:
https://blog.mozilla.org/addons/2018/08/03/new-backend-for-storage-local-api/
After you located the file, you can actually directly import that file into my speed dial - just rename it to "xxx.group_speed_dial" and then import.

And lastly, maybe you Firefox just switched profiles. You see, Firefox 67 started to use separate profile for each installation - this is a good thing to prevent some serious issues, however for some users this actually caused "data loss" because their Firefox was suddenly using a new profile. But all you need to do is switch to a correct profile. See this article for more info:
https://www.bleepingcomputer.com/news/software/firefox-67-switching-to-empty-profiles-causing-data-loss-fears/

Best regards,
Juraj Mäsiar