All backgrounds Turned white after `:AnsiEsc`

[sihunqu123]

Now only current window, all windows' backgrounds Turned white after :AnsiEsc. See:

[powerman]

I'm afraid this is not enough information for useful bugreport. All I can say - this isn't happens usually, so try to debug it on your side (e.g. disable other plugins, simplify .vimrc - try to find out minimal vimrc which can be used to reproduce this issue).