[lexical-playground] Bug Fix: avoid node selection on CardNode drag release

[kavyansh18]

Description

When selecting text inside an editable slot of a CardNode, releasing the mouse over the node's chrome area could incorrectly trigger a NodeSelection for the entire card.

This happened because registerHostChromeSelection handled the mousedown and subsequent CLICK_COMMAND independently. It checked only the target of the click, so a click synthesized after dragging from a slot to the card chrome could be interpreted as an intentional click on the host node.

This PR fixes the issue by tracking the host node on which the mousedown started and only promoting that node to a NodeSelection when the subsequent click corresponds to the same host.

Changes

• Track the host NodeKey when a mousedown occurs on host chrome.
• Require the click target to resolve to the same host node before creating a NodeSelection.
• Clear the tracked key after each click and when the editor root changes to prevent stale interaction state.
• Preserve the existing behavior for intentional clicks directly on host chrome.
• Add a regression test covering text-selection drag release over CardNode chrome.

Closes #9115

Test plan

Before

The new regression test was run against the unpatched implementation.

The test failed as expected because releasing over the card chrome incorrectly promoted the card to a NodeSelection:

FAIL ... CardNode.test.ts
AssertionError: expected true to be false

Tests 1 failed | 16 passed (17)

This reproduces the behavior described in #9115.

After

After applying the fix:

• CardNode regression test: 17/17 passed
• PullQuoteNode tests: 10/10 passed
• lexical-playground unit test suite: 357/357 passed
• TypeScript: passed
• Flow: passed
• ESLint: passed with 0 errors/warnings
• Prettier: passed
• git diff --check: passed

The regression test also verifies that an intentional mousedown + click on the host chrome still correctly creates a NodeSelection.

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Project	Deployment	Actions	Updated
lexical	Ready	Preview	Sep 8, 2026 6:22pm UTC
lexical-playground	Ready	Preview	Sep 8, 2026 6:22pm UTC

[kavyansh18]

hey @etrepum can you please review the PR

[kavyansh18]

Thanks for the review @etrepum . Applied the suggested change to use the latest editor state.