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MacOS CTRL (and CMD) keys no longer work with HTML5 RDP

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MacOS CTRL (and CMD) keys no longer work with HTML5 RDP



Since about October I've been unable to use the CTRL or CMD keys on my Macbook with Secure Access Service. This makes my job and a software engineer highly annoying - I need my undo shortcut!


It used to be the case that I could use the CTRL key on my Macbook and it would map to CTRL on my remote Windows PC at work. 


Just before it stopped working, an overlay started to appear across the width of the bottom of my web browser showing buttons on screen for CTRL, ALT, ESC and Tab. I'm being wondering whether this is a Pulse feature, or a local mod by IT support.... These overlaid modifier buttons did actually used to work, if I clicked on them and them and then a key on the keyboard to modify.


I have tried these browsers and neither works:

- Chrome (Version 79.0.3945.117 (Official Build) (64-bit))

- Safari (Version 13.0.4 (15608.


IT Support at my office are saying it's a bug in MacOS Catalina, and indeed, it could well have coincided with me upgrading my laptop. But I know other people on the latest MacOS (MacOS 10.15.2 (19C57)) don't have the same issue. Although they do see the overlay...


I don't know how to find out the version of Secure Access Service my company is using.


I am at the end of my tether! Please help.