*Steps to Reproduce:*
# Create a new 2D project
# Install the "2D Tilemap Editor" package from the Package Manager
# In the Hierarchy Window, create a Tilemap via 2D Object > Tilemap > Rectangular
# In the Scene View Overlays, click "Open Tile Palette"
# Open the "Tilemap" dropdown in the Tile Palette window
# Hover the mouse over Tilemap, then Create New Tilemap, then move the cursor outside the dropdown, and finally back over Tilemap again
# Observe the highlight behaviour

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*Actual results:* The mouse highlight becomes stuck on "Create New Tilemap"

*Expected results:*  The "Create New Tilemap" popup should close when the mouse leaves the area, and hovering back over Tilemap should work normally

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*Reproducible with versions:* 1.0.0 (6000.0.1f1, 6000.0.45f1, 6000.1.0b15, 6000.2.0a9)

*Not reproducible with versions:* 1.0.0 (2022.3.60f1, 6000.0.0f1)

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*Tested on (OS):* macOS 15.5