This has been around for a while - but just ran in to it again. All devices are at version 2.6.4 release code.
EOS classic RPU - master
EOS Classic console - backup
EOS programming wing with PC - client (2x screens 1920x1080)
Windows 10 laptop - client, mirroring programming wing (2x screens 1920x1080)
On the programming wing, I have a full screen DS tab with 4 DS banks. The laptop that is mirroring the programming wing computer displays the DS tab but it only shows 2 banks of DS. On the laptop, you can change the category of the DS banks locally but there is no gear icon to change the display options to add more banks of DS.
It would be nice to have the mirroring computer correctly reflect the state of the DS tab that is shown on the console that is being mirrored.