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Unable to open settings immediately after starting in Troubleshoot Mode

Cutter

When I launch Firefox in Troubleshoot Mode and try to open the Settings page (about:preferences) right away, Firefox becomes unresponsive. This issue does not occur when Troubleshoot Mode is off.

I'm using Firefox 140.0.4 on macOS Sequoia 15.5.

When I launch Firefox in Troubleshoot Mode and try to open the Settings page (about:preferences) right away, Firefox becomes unresponsive. This issue does not occur when Troubleshoot Mode is off. I'm using Firefox 140.0.4 on macOS Sequoia 15.5.

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That is strange. It's difficult to think of what might be different in loading that page.

What led you to go into Troubleshoot Mode in the first place?

I came across this issue by accident while investigating a different problem in a Firefox-based browser.

I thought it was specific to that browser, but I tried it in Firefox as well and the same issue occurred.