Probably piece of sand got in when you applied your cover. Or piece of sand got inside while being in the pocket etc.
Glad to see you here ;) Since Galaxy S3 ;)
Mine got same size. But I flashed it with adb provided from Xiaomi. Try downloading full adb package. I think its related to drivers and adb itself.
Wysłane z mojego ONEPLUS A5000 przy użyciu Tapatalka
I'm on old Bootloader so I'm not using it. But it's hardly tested on my national community forum and it's confirmed. Wakelock is not stucking anymore
Wysłane z mojego GT-I9305 za pomocą ...
However not everyone is getting OTA info even from same CSC. No idea how. But oh well. It started:D