Duplicati beta 22.214.171.124 on MacOS.
Pause works as intended when currently no backup is running. A scheduled backup will not start.
If a backup already has started and is in its initial phase of counting the files, pressing pause does nothing. Duplicati will continue counting all files in the backup set until it reaches the total number of “Files to Go”. The actual backup then does indeed pause.
I would expect Duplicati to fully pause all processes when Pause is selected. In particular the file counting process is very hard drive intensive and might interfere with something else I am trying to accomplish.