PrismLibrary / PrismLibrary/Prism
[BUG] In .NET 10 / MAUI / Prism 9.0.540 Dialog Mask will not fill the whole page.
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- Dominant language
- C#
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Description
Description
When using a Dialog with UseMask="true" the mask will leave a gap the top of the screen. This issue did not exist in .NET 9. See screenshot (white bar on top is the gap).
I am running Prism 9.0.540 but tested it with pre-release 9.1.111-pre too. The issue is slightly different but is still there.
Using .NET MAUI 10.0.60.
Steps to Reproduce
Run demo app on simulator with iOS 26.x:
https://github.com/phillippschmedt/DialogBug
Platform with bug
.NET MAUI
Affected platforms
iOS
Did you find any workaround?
No.
Relevant log output
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the linked DialogBug demo app and reproduce the Dialog with UseMask="true" on an iOS 26.x simulator using .NET MAUI 10.0.60. Compare the mask placement with .NET 9 and the reported Prism versions; done means the dialog mask fills the whole page without a gap at the top.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- csharp, ios
- Domain
- mobile-dev
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100