Hello,
You may first try go to Settings >Accessibility > Keyboards > full Keyboard Access > commands remove “space bar” from the “activate” field as suggested in RDP for IOS Space Bar not working on Ipad Pro - Microsoft Q&A
While certain key combinations might not work as expected in a remote session, many of the common Windows key combinations, such as CTRL+C, CTRL+V, and ALT+TAB will work (see:Get started with the iOS client | Microsoft Learn)
Also, ensure that you have the most recent version of the RD Client installed, as updates typically contain bug fixes that might resolve your issue. Additionally, consider submitting feedback directly through the app’s settings menu, engineer team may address this in the future.
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