I wasn't able to reproduce this issue on my end (see atatched).
Does it happen to you only in Themler library search fields?
Coudl you, please, try simple restart of the progam (or computer in general)?
Still this is happening. I'm trying to type word 'draw', it appears 'ward'. rarely it works fine. Attaching gif file, plz check on browser.
Is your computer local RTL? This problem should not be related to the application. All the other input boxes inside Themler are working fine?