We use big monitors, able to display multiple hosts simultanously. Prior to the update, host-windows would ope,n sized accordingly to the hosts resolution, and we would position them so we could work in them, while reading pdf-manuals on the side (or check server-settings / other hosts while doing so).
I've worked like this for years under Windows10, but since the last update, the host-windows always start in fullscreen (with HUGE black borders). I always have to change the window to be "resizeable" and then resize it, so I can see anything besides the host.
There's a setting under "remote control" that allows to save the window-size/postition, but this a "one-size fits all" - solution, and it doesn't fit at all. It always saves the last window dimension, and every other support call we get, is at a different resolution and I have to resize the windows again. This might not sound like much, but it's annoying to do so while speaking with customers - annoying enough that some of my collegues ask to change to a different software.
Re-installing Teamviewer didn't change the behavior.
Is there an option to restore the former functionality? Can we install an older version and which version was the last working one?