What’s wrong with gvim after the window is maximized?

  question, vim

After installationvim-airlineAfter the plug-in, maximize the gvim window (under windows10) prompt:


What is going on here?

There is no problem in setting the encoding format.
_vimrcThe encoding format set in isutf-8Just.

set encoding=utf-8

I didn’t want to ask myself and answer myself, but I just had the answer during the waiting period.