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fluentribbon / Fluent.Ribbon

WPF Ribbon control like in Office
http://fluentribbon.github.io
MIT License
2.48k stars 515 forks source link

DropDownButton closes for no reason (only for one end user) #1100

Closed DaveInCaz closed 1 year ago

DaveInCaz commented 1 year ago

One of my end users has reported a strange problem that I can't reproduce, so I thought I'd post here just in case anyone has seen this before and can offer advice.

My application has several Fluent:DropDownButton controls on a ribbon. For this one user, all have the same problem which is that the dropdown portion closes before they can click on it. Apparently just moving the mouse into the dropdown region causes this to happen.

It consistently occurs, even if the window is closed & reopened, or even the entire application. The user says he has tried on the touchpad, touch screen, and the mouse. All have the same behavior, so it doesn't seem like a hardware glitch.

There is no code related to these controls handling mouse events at all. And there are apparently no other users having this same problem. Other similar controls like standard Win32 menus do not reproduce the same thing.

Any suggestions would be very helpful! Thanks

Environment

batzen commented 1 year ago

That sounds really strange.

Any chance you can debug on the users machine? If debugging is not possible the only thing that could help is add tracing code to a custom build of Fluent.Ribbon and log when OnIsDropDownOpenChanged is called with false. The log should of course include the current stacktrace to narrow down what causes to popup to be closed.

DaveInCaz commented 1 year ago

Sorry I had not replied. We never got an opportunity to access the end user PC. If this ever comes up again I'll do my best to get that kind of access & info!