#3963 - Macro: After removing a monomer from Favorites tab, its tooltip does not disappear and interferes interaction with other monomers

[gitquil07]

How the feature works? / How did you fix the issue?

Fix: Library preview persists after unfavoriting from Favorites

Issue: After removing a monomer or RNA preset from Favorites via the star, the library structure preview sometimes stayed visible.

Cause: Preview opens via a 500 ms debounced showPreview in MonomerGroup / RnaPresetGroup. Unfavoriting unmounts the card without a reliable mouseleave, so the usual clear path does not run; a pending debounced call can still fire and restore the preview. Clearing Redux alone does not cancel that debounce (and hidePreview does not cancel the library groups’ debouncer).

Fix: closeLibraryPreview (cancel debounce + showPreview(undefined)) is passed as onStarClick from each group. MonomerItem / RnaPresetItem call onStarClick at the start of addFavorite, before toggleMonomerFavorites / togglePresetFavorites.

Tests: Star click invokes onStarClick in MonomerItem.test.tsx and RnaPresetItem.test.tsx.

Changed: MonomerGroup.tsx, MonomerItem.tsx, RnaPresetGroup.tsx, RnaPresetItem.tsx, RnaPresetItem/types.ts, plus the two tests above.

screen-capture.1.webm

Check list

• unit-tests written
• e2e-tests written
• documentation updated
• PR name follows the pattern #1234 – issue name
• branch name doesn't contain '#'
• PR is linked with the issue
• base branch (master or release/xx) is correct
• task status changed to "Code review"
• reviewers are notified about the pull request