I'm unable to open Developer Console's command line window (
CTRL+SHIFT+L) in both Chrome 73 and Firefox 66. Oddly though, this seems to work just fine in Internet Explorer 11.
If I open Chrome's developer console I see the following errors being logged:
However it's not just the
CTRL+SHIFT+L shortcut that's broken,
CTRL+G to goto a line in the code editor is also broken and some other shortcuts.
I've done all the usual things such as disable my plugins, log out/in, close/re-open my browser. My Salesforce session is also running in a different browser user profile where these extensions are disabled.
The same thing happens in both a Developer account and an Enterprise account.