JNGP lagging a lot when typing text

[Noctosphere]

Hello
As the title says, JNGP lags a lot, bugging out for about 10 seconds when i open a window to type text,
like descriptions or unit/item/ability/upgrade name, etc
I noticed it doesn't happen when the black square doesnt show up,
you know that black square that shows colored text
So I guess this function has bugged.
Any tip?
thanks