Blinking line?

[ktb92677]

How can I diagnose this issue? I have tried rebooting and even reinstalling. https://imgur.com/a/2OYmFfj

[xuzhen]

What's your distribution, desktop environment and the version of dockbarx?
Using the following command to dump the configuration and upload it here.
dconf dump /org/dockbarx/ > a.txt