Hot Reload: Do not add empty div when diagnostics are empty (1xx) #51837
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@DustinCampbell ptal |
javiercn
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Nov 21, 2025
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Description
Browser displays gray overlay when changes are applied that do not modify C# code (e.g. CSS only changes). The overlay obscures web page content.
We shouldn't display gray overlay when no errors are being reported.
Fixes #51825 and dotnet/aspnetcore#64051
Port of #51836
Customer Impact
Impacts Hot Reload for web apps: CSS editing and saving C#/Razor files without changing their content.
Regression?
Regressed by #51210
Risk
Verification
Packaging changes reviewed?