fix(grid): Make sure border does not appear when new theme is loaded runtime.#17032
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fix(grid): Make sure border does not appear when new theme is loaded runtime.#17032
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MayaKirova
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❌ status: awaiting-test
dkamburov
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Pull request overview
Fixes a visual regression where merged grid rows can show a bottom border when a new theme stylesheet is loaded at runtime (repro added in the cell merging sample).
Changes:
- Add a runtime theme CSS toggle to the
grid-cellMergingsample to reproduce the issue. - Ensure merged rows don’t render a bottom border by strengthening the merged-row border override in the grid theme styles.
- Remove a repaint-related
recalcUpdateSizes()call from row height resolution logic.
Reviewed changes
Copilot reviewed 5 out of 6 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| src/app/grid-cellMerging/grid-cellMerging.component.ts | Adds runtime theme stylesheet injection/removal and a signal for button state. |
| src/app/grid-cellMerging/grid-cellMerging.component.html | Adds a toggle button to load/unload the runtime theme CSS. |
| projects/igniteui-angular/src/lib/grids/row.directive.ts | Removes a size-cache recalculation side-effect during row height evaluation. |
| projects/igniteui-angular/src/lib/core/styles/components/grid/_grid-theme.scss | Forces merged row bottom border to stay removed even under runtime theme overrides. |
| angular.json | Copies grid-cellMerging/theme.css into build assets so it can be loaded at runtime. |
MayaKirova
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✅ status: verified
Zneeky
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💥 status: in-test
dkamburov
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Apr 15, 2026
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Closes IgniteUI/igniteui-angular-samples#3903
Additional information (check all that apply):
Checklist:
feature/README.MDupdates for the feature docsREADME.MDCHANGELOG.MDupdates for newly added functionalityng updatemigrations for the breaking changes (migrations guidelines)