ScrollingLabel affects Dialog performance and flickers the screen

In my current project I noticed that sometimes when a Dialog or KeyboardDialog was opened the screen flickers and the control response is very slow, but that not always happened.

Today I finally realized what causes that, I use a lot of ScrollingLabels in this channel, but not always the scrolling is activated, so only when the scrolling was happening the flicker and slow responsiveness shows up on the dialogs.

I believe this is a bug, Dialogs should disable temporarily the scrolling, and it is a modal screen.