Why doesn't the script window disappear on Mozille?

Question

Mozilla Firefox

The window script does not disappear until you press Esc in Mozille. Reinstalled. nothing helped. Everything is licensed.

Today I reinstalled beta Mozilla 50. Then I rolled back to version 49. after this problem.

Answer 1

Probably some beta settings have been added to the profile and now work crookedly. Create a new one and check.