Notifications disappear behind other windows even when TopMost set to true

[Lakritzator]

Library version

ToastNotifications 2.3.4 and older

Expected behaviour

Notifications always stay on top

Actual behaviour

Notifications start to hide behind windows

Steps to reproduce behaviour

Show a notification, than show another Window with TopMost set to true -> notifications will no longer be TopMost (any window will go over them!)

Code to reproduce behaviour

Will supply this!

Questions

No

Hi,

I actually noticed this before, but as I couldn't reproduce it until today, I couldn't really tell what the issue was. I will probably make a PR for this, just wanted to report it as soon as possible so I don't forget.

Best wishes,
Robin

[Lakritzator]

According to some of the information I found, the should handle the deactived event and when this is called (and DisplayOptions.TopMost is set to true) TopMost should be set to true again.

[Lakritzator]

This seems to be a very specific issue, as it's harder to reproduce in your project as I thought... working on it.

[rafallopatka]

Hi, Thank you for reporting this issue, I can look on this also.

[Lakritzator]

That is really nice, but it seems to be a weird border case which is caused by something in Greenshot, as just creating a new Window with TopMost = true doesn't help

I will keep hunting this issue, as without a fix I cannot release Greenshot with your notifications 😄

If I can't find a reproducible way, without Greenshot, I will probably just compile your project to see if the way with the deactivated event is a solution for Greenshot.

[Lakritzator]

A short status update:

• I can reproduce it in the Dapplo.CaliburnMicro demo project. After opening the settings via the context menu, the notifications are no longer Topmost.
• It only happens when I have MahApps enabled, if I remove the reference in the startup which enables all the MahApps logic, the problem does not occur.

[rafallopatka]

Hi, I tried to reproduce this behaviour with mahaps. I created a sample where after clicking a button (or via context menu) new window shows, but notifications are still above new window. Maybe it is related to some specific configuration of your settings window as you mention?

[Lakritzator]

I really have no idea, I can reproduce the problem but cannot find what is causing it.
And I also tried to see if the NotificationsWindow is deactivated or lost focus, but this doesn't seem to be the case... mysterious!!!

One time I thought I fixed it, but it seems the problem doesn't always occur. (like 1 out of 10 it is not happening).

I'll probably find it, and when I do it's probably clear why it happened, but I didn't have a lot of time the last few days.