Refresh the page.
That’s not that strange. Sometimes Gimkit thinks that I have a text device covering the entire map!
Refreshing doesn’t work.
Try switching the Eraser Type to Terrain and back again to props?
It also happens on mobile.
@here found out the solution: you needed to get a new wooden sign or another new prop you had. (not copy it)
I still want gimkit to fix this bug, though.