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[iOS, Windows] Shell.TabBarBackgroundColor not reset to Null #32992

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[iOS, Windows] Shell.TabBarBackgroundColor not reset to Null#32992
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area-controls-shellShell Navigation, Routes, Tabs, Flyouthas-workaroundpartner/syncfusionIssues / PR's with Syncfusion collaborationplatform/iosplatform/windowss/triagedIssue has been revieweds/verifiedVerified / Reproducible Issue ready for Engineering Triaget/bugSomething isn't working
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@NafeelaNazhir

Description

@NafeelaNazhir
NafeelaNazhir
opened on Dec 4, 2025

Description

When Shell.TabBarBackgroundColor is set to a color, the TabBar updates correctly on all platforms.
However, when the property is changed to null dynamically at runtime, the TabBar does not reset to null.
Instead, the TabBar continues to display the previously applied color, indicating that runtime resetting is not working correctly on these platforms.

Expected Output Actual Output
Screen.Recording.2025-12-03.at.6.59.15.PM.mov
Screen.Recording.2025-12-03.at.7.04.03.PM.mov

Steps to Reproduce

  1. Run the attached sample TabBarBackgroundColor 2.zip
  2. Tap “Apply TabBar Color” → TabBar turns LightBlue.
  3. Tap “Remove TabBar Color” → TabBarBackgroundColor becomes null.
  4. Observe the TabBar

Link to public reproduction project repository

No response

Version with bug

10.0.11

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

No response

Affected platforms

Windows, iOS

Affected platform versions

No response

Did you find any workaround?

No response

Relevant log output

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    area-controls-shellShell Navigation, Routes, Tabs, Flyouthas-workaroundpartner/syncfusionIssues / PR's with Syncfusion collaborationplatform/iosplatform/windowss/triagedIssue has been revieweds/verifiedVerified / Reproducible Issue ready for Engineering Triaget/bugSomething isn't working
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