Factorio Forums

Deactivate render-zoom-to-world-outside-coverage if activated.
Open map and zoom in so you see some area outside radar coverage.
Activate render-zoom-to-world-outside-coverage.
Try to move the map. Area which was outside radar coverage before activating render-zoom-to-world-outside-coverage isn't updated until you turn off and on the map or deactivate render-zoom-to-world-outside-coverage.

You do realize you are reporting a bug for debug feature?
And it seems to have trivial workaround

Debug features are meant to help developers fix problems - not for general game use.

As such, if you have problems with them - don't use them.