Windows 10 reached EOS (end of support) on October 14, 2025. For more information, see this article.

Avatar for Username

Search Support

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.

Learn More

Delayed response to mouse movements and clicks (Macbook)

jjsd8jrndn
jjsd8jrndn
more options

Thunderbird 140.7.0esr (aarch64) on macOS26.02

For several days now, Thunderbird has been responding extremely slowly to mouse movements or clicks. This leads to undesirable results because emails are suddenly deleted that should not be deleted (due to forced double clicks). Or folders are not opened, or the wrong folders are opened.

The last change was updating Thunderbird. Is this a known bug?

Thunderbird 140.7.0esr (aarch64) on macOS26.02 For several days now, Thunderbird has been responding extremely slowly to mouse movements or clicks. This leads to undesirable results because emails are suddenly deleted that should not be deleted (due to forced double clicks). Or folders are not opened, or the wrong folders are opened. The last change was updating Thunderbird. Is this a known bug?

Chosen solution

Would you please see if the problem persists in troubleshooting mode?

Help menu > Troubleshooting mode

Read this answer in context 👍 1

All Replies (2)

Rick
Rick
  • Top 10 Contributor
more options

Chosen Solution

Would you please see if the problem persists in troubleshooting mode?

Help menu > Troubleshooting mode

jjsd8jrndn
jjsd8jrndn Question owner
more options

Seems the switch between the modes have eliminated the issue.

Did not exclude addons when in troubleshoot mode, so only difference was the defined symbols in header line. During troubleshoot mode issue did not exist. And when back to normal mode anything “works as designed”. Means for the time being the issue is gone.

Thanks!

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.