IE11 compatibility view mode crashes Mattermost

I’m using Mattermost in company network,
and enabling IE11 compatibility view mode.

Then I can not see the correct Mattermost view.
so something was broken.

when I turn-off the compatibility view mode setting,
it shows,

Sorry, but since we don’t support any versions older than IE11, we don’t support compatibility mode. There may be something we can do to automatically disable compatibility mode so feel free to submit a feature request for that here.

Thanks for this answer, and understood.
I’m thinking about to use Chrome or FireFox in our environment.