This has happened a few times in the last few weeks. ## What were you doing? I was looking at the landing page of AI Help (http://localhost:3000/en-US/plus/ai-help, a local webpack dev-server version of https://developer.mozilla.org/en-US/plus/ai-help) without being logged in. Then I opened the DevTools using Right click > "Inspect" on an SVG element. I'm not sure if the issue happened immediately, and I cannot reproduce it systematically, so it might have to do with me using "Inspect Accessibility properties" and using the "Check for issues" feature on the "Accessibility" tab, which I did prior to when the issue appeared. ## What happened? I noticed that reactions to mouse-overs and mouse clicks were slow, and clicking tabs (Console, Debugger) in the DevTools did not have any effect (apart from a delayed hover highlight). When I closed the DevTools the issue went away. ## What should have happened? Opening the DevTools should not have had any noticeable impact on overall performance, and it should have been possible to change between tabs. ## Anything else we should know? Here's a profile: https://share.firefox.dev/3HYcweL Enabled extensions: ``` Dictionnaire français dictionary 7.0b true fr-dicollecte@dictionaries.addons.mozilla.org Add-ons Search Detection extension 2.0.0 true addons-search-detection@mozilla.com Bing extension 1.6 true bing@search.mozilla.org Decentraleyes extension 2.0.18 true jid1-BoFifL9Vbdl2zQ@jetpack DuckDuckGo extension 1.4 true ddg@search.mozilla.org Facebook Container extension 2.3.11 true @contain-facebook Fakespot Fake Amazon Reviews and eBay Sellers extension 0.9.45 true {44df5123-f715-9146-bfaa-c6e8d4461d44} Firefox DevTools ADB Extension extension 0.0.5 true adb@mozilla.org Firefox Multi-Account Containers extension 8.1.3 true @testpilot-containers Google extension 1.4 true google@search.mozilla.org Redirector extension 3.5.3 true redirector@einaregilsson.com uBlock Origin extension 1.55.0 true uBlock0@raymondhill.net Web Archives extension 5.0.0 true {d07ccf11-c0cd-4938-a265-2a4d6ad01189} Wikipedia (en) extension 1.3 true wikipedia@search.mozilla.org Zoom Extension extension 2.1.52 true {bf855ead-d7c3-4c7b-9f88-9a7e75c0efdf} System theme — auto theme 1.3 true default-theme@mozilla.org ```
Bug 1880281 Comment 0 Edit History
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This has happened a few times in the last few weeks. ## What were you doing? I was looking at the landing page of AI Help (http://localhost:3000/en-US/plus/ai-help, a local webpack dev-server version of https://developer.mozilla.org/en-US/plus/ai-help) without being logged in. Then I opened the DevTools using Right click > "Inspect" on an SVG element. I'm not sure if the issue happened immediately, and I cannot reproduce it systematically, so it might have to do with me using "Inspect Accessibility properties" and using the "Check for issues" feature on the "Accessibility" tab, which I did prior to when the issue appeared. ## What happened? I noticed that reactions to mouse-overs and mouse clicks were slow, and clicking tabs (Console, Debugger) in the DevTools did not have any effect (apart from a delayed hover highlight). When I closed the DevTools the issue went away. ## What should have happened? Opening the DevTools should not have had any noticeable impact on overall performance, and it should have been possible to change between tabs. ## Anything else we should know? Here's a profile, which I started as soon as I realized that Firefox was no longer reacting to my mouse properly, and then I clicked the DevTools tabs (which had no effect) during the profile: https://share.firefox.dev/3HYcweL Enabled extensions: ``` Dictionnaire français dictionary 7.0b true fr-dicollecte@dictionaries.addons.mozilla.org Add-ons Search Detection extension 2.0.0 true addons-search-detection@mozilla.com Bing extension 1.6 true bing@search.mozilla.org Decentraleyes extension 2.0.18 true jid1-BoFifL9Vbdl2zQ@jetpack DuckDuckGo extension 1.4 true ddg@search.mozilla.org Facebook Container extension 2.3.11 true @contain-facebook Fakespot Fake Amazon Reviews and eBay Sellers extension 0.9.45 true {44df5123-f715-9146-bfaa-c6e8d4461d44} Firefox DevTools ADB Extension extension 0.0.5 true adb@mozilla.org Firefox Multi-Account Containers extension 8.1.3 true @testpilot-containers Google extension 1.4 true google@search.mozilla.org Redirector extension 3.5.3 true redirector@einaregilsson.com uBlock Origin extension 1.55.0 true uBlock0@raymondhill.net Web Archives extension 5.0.0 true {d07ccf11-c0cd-4938-a265-2a4d6ad01189} Wikipedia (en) extension 1.3 true wikipedia@search.mozilla.org Zoom Extension extension 2.1.52 true {bf855ead-d7c3-4c7b-9f88-9a7e75c0efdf} System theme — auto theme 1.3 true default-theme@mozilla.org ```