igxTooltip in igxCell shows multiple instances and becomes "mispositioned" during grid scroll

[Jennygra]

Description

When using igxTooltip inside igxCell templates, tooltips behave incorrectly during grid scrolling and virtualization.
Tooltips may remain visible, appear multiple times, or lose their position when the grid is scrolled.
This is reproducible with Ignite UI’s own tooltip component and is not limited to a specific grid type.

igniteui-angular version: 21.0.3
browser: Chrome (146.0.7680.178 and 147.0.7727.56) and Firefox (149.0)

Steps to reproduce

1. Open the provided StackBlitz
2. Hover a cell to show the tooltip
3. Scroll the grid while the tooltip is visible
4. Repeat across multiple cells

Result

• Tooltip remains visible after scrolling
• Tooltip position becomes incorrect
• Multiple tooltips may appear

Expected result

• Tooltip should close on scroll
• Tooltip should remain correctly positioned relative to its target
• Only one tooltip should be visible at a time

Attachments

Link to example