Render-window breaks on Home, End, Pg Up, and Pg Dn buttons.

[gubrus50]

The problem includes both the main body iframe (at least in Development Tool "Command Creation Generator") and the launcher.

I have not investigated enough, all I can take from the experience is that buttons above the arrow keys shift the main content, causing the electron window's overflow. I could disable these buttons. but I think it's time to study the purpose of these buttons and try to integrate their function adequately to prevent the contents from overflowing.