[igorzelaya-io]

Fixes #558

Summary

• keep the hidden CodeMirror search bridge panel out of layout
• explicitly place the bridge at the top so it cannot become a viewport-sized bottom scroll margin
• add a regression test for panel placement and the resulting bottom margin

Root cause

Voiden renders its persistent Find controls outside CodeMirror, but still opens an empty internal panel to initialize CodeMirror search state. Custom CodeMirror panels default to the bottom unless the returned panel specifies top: true. Because the internal panel group is hidden, CodeMirror measured it as a full-height bottom scroll margin. Its drag-selection logic therefore treated ordinary pointer positions as below the viewport and continuously scrolled downward.

Verification

• vitest --config vitest.config.ts run src/core/editors/code/__test__/hiddenSearchPanel.test.ts (passes)
• exact component reproduction before the fix reported a 720px bottom scroll margin and advanced scrollTop during a held, mid-viewport drag; the regression test now asserts a zero bottom margin

Existing baseline issues

The full UI run completed 188 tests successfully but still has one unrelated pipeline assertion failure and one existing plugin mock suite error.

[phurpa-tsering]

Thanks @igorzelaya-io for the fix and the regression test, and for tracing the cause so clearly.

One change before we can merge: we do development on the beta branch, not main, so this PR needs to target beta. Could you:

• Rebase your branch onto beta. Since it's a single commit, this should work: git fetch origin && git rebase --onto origin/beta origin/main bugfix/prevent-selection-auto-scroll
• Push it (git push --force-with-lease).
• Change the PR's base branch from main to beta (Edit next to the PR title).

Once it's on beta, we'll finish reviewing and merge it there. Thanks!

[igorzelaya-io]

Rebased bugfix/prevent-selection-auto-scroll onto the current beta branch and force-pushed with lease as requested. The PR is now based on beta and GitHub reports it mergeable.

After the rebase, beta already contains the hidden-panel helper and regression test, so this branch now only wires CodeEditor to createHiddenSearchPanel. The focused regression test passes (1/1).

[phurpa-tsering]

Thanks @igorzelaya-io, this looks good from our side! We reproduced the auto-scroll on beta and confirmed your change fixes it, with Find still working as expected. Thanks for the clear root-cause write-up and for contributing! 🙌