Copy content from a client machine to a Linux desktop failed randomly, nothing will be pasted into the Linux desktop. 
Meanwhile, this issue is not observed in a Windows VDA accessed from the same client machine.

• Copy content from a client machine, e.g. text.
• Move the mouse to the Linux desktop and double-click the paste target area
• Press Ctrl+V to paste, and this issue will occur that nothing will be pasted into the Linux desktop.

1. Set the HDX policy "Primary selection update mode" to "Selection changes are not updated on neither client nor host".

Problem Cause

For Linux VDA, the selection changes are updated on both the client machine and host by default.
Once the user double-clicks or selects some text area in Linux VDA, the clipboard will be updated. The original data from the client machine will be overwritten.