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Canary [regression] Trap when trying to use background image alignment that is not centered #22824

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opened 2026-01-31 08:24:35 +00:00 by claunia · 3 comments
claunia commented 2026-01-31 08:24:35 +00:00
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Originally created by @Zeroes1 on GitHub (Jan 30, 2025).

Originally assigned to: @carlos-zamora on GitHub.

Windows Terminal version

1.23.10282.0

Windows build number

10.0.19045.3448

Other Software

No response

Steps to reproduce

  1. Set use background image in default profile
  2. Try use any alignment background image that is not centered
    for example in settings.json:
    "backgroundImageAlignment": "bottomRight",

after we got exception...

100% reproduced.

Windows create crashdump.

Expected Behavior

under Canary build:
..
terminal-1.23.10151.0 - latest good

Actual Behavior

terminal-1.23.10221.0 - with trouble
terminal-1.23.10271.0 - with trouble
terminal-1.23.10282.0 - with trouble

Originally created by @Zeroes1 on GitHub (Jan 30, 2025). Originally assigned to: @carlos-zamora on GitHub. ### Windows Terminal version 1.23.10282.0 ### Windows build number 10.0.19045.3448 ### Other Software _No response_ ### Steps to reproduce 1) Set use background image in default profile 2) Try use any alignment background image that is not centered for example in settings.json: "backgroundImageAlignment": "bottomRight", after we got exception... 100% reproduced. Windows create crashdump. ### Expected Behavior under Canary build: .. terminal-1.23.10151.0 - latest good ### Actual Behavior terminal-1.23.10221.0 - with trouble terminal-1.23.10271.0 - with trouble terminal-1.23.10282.0 - with trouble
claunia added the Needs-TriageIssue-BugIn-PR labels 2026-01-31 08:24:35 +00:00
claunia commented 2026-01-31 08:24:36 +00:00
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@Zeroes1 commented on GitHub (Jan 30, 2025):

ExceptionAddress: 00007ff9ddf0fc29 (Microsoft_Terminal_Settings_Editor!winrt::impl::consume_Windows_ApplicationModel_Resources_Core_IResourceCandidatewinrt::Windows::ApplicationModel::Resources::Core::IResourceCandidate::ValueAsString+0x000000000000002a)
ExceptionCode: c0000005 (Access violation)

STACK_TEXT:
Microsoft_Terminal_Settings_Editor!GetLibraryResourceString+0x159
Microsoft_Terminal_Settings_Editor!winrt::Microsoft::Terminal::Settings::Editor::implementation::AppearanceViewModel::BackgroundImageAlignmentCurrentValue+0x496
Microsoft_Terminal_Settings_Editor!winrt::impl::producewinrt::Microsoft::Terminal::Settings::Editor::implementation::AppearanceViewModel,winrt::Microsoft::Terminal::Settings::Editor::IAppearanceViewModel::get_BackgroundImageAlignmentCurrentValue+0x2a

@Zeroes1 commented on GitHub (Jan 30, 2025): ExceptionAddress: 00007ff9ddf0fc29 (Microsoft_Terminal_Settings_Editor!winrt::impl::consume_Windows_ApplicationModel_Resources_Core_IResourceCandidate<winrt::Windows::ApplicationModel::Resources::Core::IResourceCandidate>::ValueAsString+0x000000000000002a) ExceptionCode: c0000005 (Access violation) STACK_TEXT: Microsoft_Terminal_Settings_Editor!GetLibraryResourceString+0x159 Microsoft_Terminal_Settings_Editor!winrt::Microsoft::Terminal::Settings::Editor::implementation::AppearanceViewModel::BackgroundImageAlignmentCurrentValue+0x496 Microsoft_Terminal_Settings_Editor!winrt::impl::produce<winrt::Microsoft::Terminal::Settings::Editor::implementation::AppearanceViewModel,winrt::Microsoft::Terminal::Settings::Editor::IAppearanceViewModel>::get_BackgroundImageAlignmentCurrentValue+0x2a
claunia commented 2026-01-31 08:24:36 +00:00
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@DHowett commented on GitHub (Jan 30, 2025):

@carlos-zamora this is in the new SUI a11y previews

@DHowett commented on GitHub (Jan 30, 2025): @carlos-zamora this is in the new SUI a11y previews
claunia commented 2026-01-31 08:24:37 +00:00
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@DHowett commented on GitHub (Jan 30, 2025):

@Zeroes1 Thank you so much for using Canary and filing these bugs on us. We are close to 1.23 release, so it is VERY HELPFUL!

@DHowett commented on GitHub (Jan 30, 2025): @Zeroes1 Thank you so much for using Canary and filing these bugs on us. We are close to 1.23 release, so it is **VERY HELPFUL**!
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Reference: starred/terminal#22824
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