How to unhide filtered messages in Chrome developer Tools on a MAC
You need to click on the circled X in the filter area, or focus the filter area and delete the text typed there.
There seems to be a bug in chrome, when adding filters via the rightclick context menu:
Filter > Hide Messages from ...
The only thing that worked for me, was to reset the entire debugger settings
Settings (F1 on Windows) > DevTools > Restore defaults and reload