Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

Avatar for Username

Etsi tuesta

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Lue lisää

Ketju on arkistoitu. Esitä kysymys, jos tarvitset apua.

Thunderbird (v78.4.3) (64 bit) is "Sluggish" on Big Sur

  • 1 vastaus
  • 2 henkilöllä on sama ongelma
  • 6 näyttöä
  • Viimeisin kirjoittaja Wayne Mery

abalfour
abalfour
more options

I have been using Thunderbird and Firefox for many years and have never had any Speed issues until now.

I installed macOS Big Sur (v10.0.1) and upgraded tp Thunderbird (v78.4.3) (64 bit) this past week and immediately noticed that Thunderbird was "Sluggish".

For instance, when I take my mouse pointer to an email(s) that I want to delete, it takes 5-10 seconds for that email(s) line to be "Highlighted" and once it does, it takes another 3-4 seconds before I can see the "Delete" button or can use my Keyboard's "Delete" key.

I have absolutely ZERO problems with any other Apps (including Firefox) on both the Mac side and Parallels Desktop for Mac.

I am hoping that the programmers are working to fix this annoying problem.

I have been using Thunderbird and Firefox for many years and have never had any Speed issues until now. I installed macOS Big Sur (v10.0.1) and upgraded tp Thunderbird (v78.4.3) (64 bit) this past week and immediately noticed that Thunderbird was "Sluggish". For instance, when I take my mouse pointer to an email(s) that I want to delete, it takes 5-10 seconds for that email(s) line to be "Highlighted" and once it does, it takes another 3-4 seconds before I can see the "Delete" button or can use my Keyboard's "Delete" key. I have absolutely ZERO problems with any other Apps (including Firefox) on both the Mac side and Parallels Desktop for Mac. I am hoping that the programmers are working to fix this annoying problem.

Muokattu , muokkaaja Wayne Mery

Kaikki vastaukset (1)

Wayne Mery
Wayne Mery
  • Moderator
  • Top 10 Contributor
more options

see https://bugzilla.mozilla.org/show_bug.cgi?id=1677272