I have the same problem with my Macbook Screen after display replacement. I took my MBP to Apple authorizes nears my home now and let’s see what happens!
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=== Update (06/25/2020) ===
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The Apple authorizer told me it is not because of hardware, it is software issue. I talk with Apple Support advisor USA, he confirmed it is Catalina 10.15.5 bugs and he asked me to wait for the next Catalina updates and We still can use our MBP as usual.
[image|2138031]
I have the same problem with my Macbook Screen after display replacement. I took my MBP to Apple authorizes nears my home now and let’s see what happens!