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I'm debugging a React Native 0.61.5 app with Chrome and usually when code stop running on a breakpoint and I hover a property, I can see all the details of it in a popup window. But for two days now I can't get back this functionality. I restarted computer, cleaned Chrome and Metro bundler, tried with virtual or real device but it's still not working. Did I deactivated something accidentally ?
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Go to the "Sources" tab. At the top right hand side, toggle the button that looks like the pause symbol surrounded by a hexagon (button on the far right) until the color of the circle turns black to turn it off. If the pause symbol isn't blue it may be that you've accidentally marked a line for debugging inspection.
You can right-click on any breakpoints in the Source tab and click on Remove breakpoint or right-click on the right side on Breakpoints section and Remove all breakpoints!
Update: The issue seems to be resolved with the new Chrome update 79.0.3945.117.
Yes, with Chrome 79 this functionality was broken. This is the thread where people are reporting this bug: https://support.google.com/chrome/thread/22882968?hl=en
(and also in the link from the comment to this question)
And this is a thread where Chrome developers are tracking this issue and trying to fix it: https://bugs.chromium.org/p/chromium/issues/detail?id=1033022
In Chrome Canary (81) this feature is working, and it's reportedly working in the Chrome Dev version (80). Other alternatives are Firefox (also people say that it's working in Opera and other browsers) and debugging via VSCode.
It seems they aren't going to fix it until the version 80, which isn't expected to be released until February (from what people say in that thread: https://support.google.com/chrome/thread/22882968?hl=en).
Also there was this change: https://chromium-review.googlesource.com/c/chromium/src/%2B/1835357 which made variables appear on hover only inside the innermost scope. Update: this feature (to evaluate outside the innermost scope) will probably be restored: (from https://bugs.chromium.org/p/chromium/issues/detail?id=1033022)
"This undoes http://chromium-review.googlesource.com/c/chromium/src/+/1835357, which limited the eager popover evaluation to the innermost scope, which is the only scope for which we can produce reliable results right now. For the outer scopes, it might still produce the right results, but we can't guarantee that. But the feature is still very useful and so we are restoring the behavior here, and will follow up with a proper fix and UX later".
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