Quote:
Originally Posted by BetterRed
...My impression is that something causes Windows to lose whatever pinning a running instance does to the registry - but only for 64 bit calibre, not 32bit calibre or other programs (e.g. PDF XChange), that use the AppUserModelID 'facility'...
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I get the issue with PDF-XChange and as I have said applications that do so seem to be differentiated from those that don't in that the issue ones have a shortcut in ProgramData/Microsoft/Windows/Start Menu/Programs. As far as I have experienced I think all such programs do it for me.
Regarding timing, perhaps the following adds strength to that proposal -
I had a play around with randomly changing the taskbar settings for which displays the taskbar button should display on while the application window was on a second display. As I said before the active instance one would move to the monitor the application window was moved to when set to do so. However, now later, I randomly changed back and forth the setting for the button between "all taskbars", "main taskbar and where widow is open" and "taskbar where window is open" and managed to "trick" it into ending up with 2 buttons on the taskbar of both displays
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So something in Windows affects that behavior in a particular family of application installs (probably just those in the ProgramData directory)???
Off for my evening meal: I would be interested in any outcomes.