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New scope feature on the developer tools causing extreme slowdown

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  • Èsì tí ó kẹ́hìn lọ́wọ́ Giorgy Castaneda

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I am using the newest version of Firefox 121.0.1 and a new checkbox to `Show original variables` under the 'Scopes' section in the developer tools showed up after the newest update when it wasn't there before. When it is turned on, this new feature on the developer tools is causing extreme slowdown and substantially slowing down my debugging time by taking 30+ seconds for my variables to show up in the scope every time I move around breakpoints. Is there any solution to this problem? If not, I would please ask for this feature to be removed or optimized so it doesn't impede with my development time since it worked just fine before and the variables showed up instantly before the update. Otherwise, I will have to stick with an older version of Firefox until this issue is fixed since I use it extensively for my debugging needs.

I am using the newest version of Firefox 121.0.1 and a new checkbox to `Show original variables` under the 'Scopes' section in the developer tools showed up after the newest update when it wasn't there before. When it is turned on, this new feature on the developer tools is causing extreme slowdown and substantially slowing down my debugging time by taking 30+ seconds for my variables to show up in the scope every time I move around breakpoints. Is there any solution to this problem? If not, I would please ask for this feature to be removed or optimized so it doesn't impede with my development time since it worked just fine before and the variables showed up instantly before the update. Otherwise, I will have to stick with an older version of Firefox until this issue is fixed since I use it extensively for my debugging needs.
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Try the devtools forum on Mozilla Discourse.

Could this be related to this bug?

  • 1874398 - Inspecting variables is slow in apps with big bundles
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cor-el said

Try the devtools forum on Mozilla Discourse. Could this be related to this bug?
  • 1874398 - Inspecting variables is slow in apps with big bundles

Yes, it's very similar to that bug but this new feature made it worse I believe since he didn't mention it specifically.

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cor-el said

Try the devtools forum on Mozilla Discourse. Could this be related to this bug?
  • 1874398 - Inspecting variables is slow in apps with big bundles

Actually, after testing it more on a previous verison of Firefox, I am still seeing the same amount of slowdown even though it wasn't always this way so I'm not sure what changed. It is definitely affecting my react app more than my javascript app, that's for sure.