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Network tab in devtools goes blank so frequently in 70.1 and 71

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The Network tab in devtools goes blank so frequently in so many sites. I don't know if this is the problem of my own or a bug.

https://i.loli.net/2019/12/07/GiLCMqDrk9vxfUd.png

I'm not sure the triggers of the bug. but several conditions when the tab turns blank:

typing in the filtering input

The Network tab in devtools goes blank so frequently in so many sites. I don't know if this is the problem of my own or a bug. https://i.loli.net/2019/12/07/GiLCMqDrk9vxfUd.png I'm not sure the triggers of the bug. but several conditions when the tab turns blank: typing in the filtering input

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