LastPass extension window is blank in Firefox Private tabs

[lazza58]

I'm using Firefox  with Startpage. LP used to work fine in private windows but now when I click on the extension it just opens a white box.

Any help appreciated. Thanks

[Robbie8592]

Whenever I log in to my LastPass account on the Firefox extension it just goes blank after.

Firefox Version: 93.0

LastPass Firefox Extension Version: 4.81.0.3

screenshot of issue

[Christian2001]

I can confirm this behavior after upgrading to Firefox 93.0. In my case, the blank LastPass box only shows in Private windows, it seems to work fine in normal/non-private windows.

LastPass still works fine in Private, it fills in my password, and recognizes when I've created a new password, the extension just doesn't show anything but a blank white box. That does make it hard to launch websites that I know I'm going to need to log into, since I rely on LastPass as a form of bookmark keeper for said sites.

[cbrillow]

I concur with Christian2001's post, above. Using Firefox 93.0. LastPass works normally in regular mode, but presents a blank slate in a private window. I can manually call up a site and LP will fill the username & PW, but often rely on selecting from a list of 'Recently Used' sites from the list that is now blank...

I have been successfully using LP in private windows for a long time. (Since the last time it was broken several years ago) 

Edit: I have made sure that the latest version of the extension is installed, and that I've enabled it for use in private windows...

[RachelO]

Hi @Robbie8592 and @cbrillow,

When testing on our side we aren't able to reproduce this issue, although after clicking the LastPass icon in a Private window in Firefox we did need to click "Accept" to start using the LastPass extension. Could you try making sure cookies aren't being blocked when using Private windows/tabs, and also try disabling/re-enabling the LastPass extension in the Private tab/window to see if you can then click Accept and see if the extension works as it should?

[cbrillow]

Hello RachelO,

Thank you for your response.

I have experienced identical results in Private Windows on 3 computers, and have two or three others that I could also try, but there's no reasonable expectation that they would behave any differently.

With regard to your questions and suggestions:

"Could you try making sure cookies aren't being blocked when using Private windows/tabs..."

Please see the attached photo, at the bottom of the message, showing the Firefox privacy settings.

"also try disabling/re-enabling the LastPass extension in the Private tab/window to see if you can then click Accept and see if the extension works as it should?"

I have done this per your instruction, but will note that I've always had the popup to requesting that I click to Accept using LastPass. I have also cleared the cache & cookies in both Firefox and the extension.  The following link is to a 3-minute mp4 video that illustrates what happens when I login to the  LastPass extension in both regular and private windows. 

If there is any more information that you might find helpful, I'll be happy to provide it.

 

[drkbrhds]

I am also experiencing this issue with Firefox 93.0 on Windows 11. After clicking Accept on the Accept Permissions view, which appears just fine, the Firefox extension pop-out window is blank.

Firefox version: 93.0

LastPass Extension version: 4.81.0.3

Accept/Decline Permissions:

After clicking "ACCEPT":

Here are the steps I have completed to troubleshoot the issue:

- Uninstall the extension

- Restart computer

- re-install the extension

- Cleared cache/cookies in Firefox, closed out of the browser, and re-opened

[GlennD]

Hi @lazza58 

I just tested this in the latest version of Firefox on Windows and was able to recreated the issue, after accepting the Firefox permissions the extension window loaded blank. I will check with the rest of support to see if this issue has been reported already and create a ticket if one does not exist.

[lazza58]

Always nice to know you're not the only one. Thanks for your help with this Glenn.

[RachelO]

Hi @cbrillow and @drkbrhds, 

The support team would like to gather some more information as we aren't able to reproduce this issue on our side, so that the team can gather more specific details could you submit a bug report to the team following the steps here? https://support.logmeininc.com/lastpass/help/how-do-i-report-a-bug-to-lastpass