Firefox with privacy.resistFingerprinting: can't see sleeping tabs when I click on the button

[DrunkenCommie]

Description

Want to see what Sleeping Tabs I have for today.

Expected Behavior

Click on extension (properly showing number of tabs to be opened today), get the window showing what tabs are to be opened (today or in all-future). Either all tabs (and sort), or just-today tabs.

Actual Behavior

Click on extention, click "See Sleeping Tabs" - and just focus goes back to previous focus (usually to URL-bar; this time: back to this, where my cursor is now, where I'm typing this issue report). It works fine (!) when I configure keyboard shortcut (just configured silly-but-free Ctrl-Shft-U, and it works). Just clicking on "See Sleeping Tabs" doesn't.

How to Reproduce (if applicable)

Get Firefox, enable strong privacy (about:config, privacy.resistFingerprinting = true), install add-on, put any tab to sleep, try to verify what tab did you snooze. Oh, might be important - have LOTS of tabs open (almost 3000 here). And two other Snooze-like addons: bwinton's original "Snooze Tabs" (long not developed) and broken "Snooze Master" (by em_te) (I'm trying to replace them with this addon).

Your Device

• Browser and version: Firefox 86.0, privacy.resistFingerprinting = true
• OS: Windows 10 (19042.844)
• Device Resolution (UI related bugs only) 3000x2000 (don't think it's relevant here, but just in case)

Which Page

any

Screenshots / Videos / Logs

[rohanb10]

I don't think I quite understand the issue at hand here. Are you saying that when you click "See Sleeping Tabs" in the popup, it is simply closing the popup?

The expected behaviour is to open the "Nap Room" page in a new tab (or redirect you to an existing tab that is on the Nap Room page). There is some complicated logic in choosing which tab to open, but you should be automatically navigated to that tab 100% of the time.

I was not able to replicate it in my browser even after turning resistFingerprinting on. I don't have 3000 tabs open, and I havent really tested for a number that large tbh.

[renjujv]

@DrunkenCommie I would suggest trying after disabling the other Snoozz like add-ons. Also, maybe try with a lesser number of tabs - tbh 3000 looks like a number used for some perf testing. 😵‍💫 Would help rule out variables.