Incorrect number of displays in console

after upgrade cms from 1.8.9 to 1.8.11, web console shows me “zero” displays (big 0 digit next to display icon inside circle at the top) even in the list of displays there is one active and authorized display and everything works fine.
how can I fix this ?
please help.
I’m running cms on docker in windows 10 pro 64-bit.
docker and cms was restarted.

It is a known bug, will be fixed in 1.8.12 -

Worth mentioning that it is just a visual bug on the dashboard, not an actual problem with the displays.

thank You for information.