Alt+Space
Do not press Alt + Space.The operating system can take over this shortcut and open a system/window menu, interrupting the typing page and custom Alt-language controls.
Alt+R
Do not press Alt + R.NVIDIA or another desktop overlay may capture this combination before the website sees it. If it causes the page to stop responding correctly, refresh the page to continue.
Altalone
Do not tap Alt by itself.Hold Alt while pressing the letter or number you want, then release Alt when finished. A bare Alt press can let the browser or operating system activate its own menu and steal typing focus.
AyeSearch Typing blocks this as much as the browser allows and restores typing focus after Alt is released.
A website cannot override a shortcut that the operating system or desktop software captures before the browser receives it.