[tooltip] Multiple tooltips on the same target don't work anymore

[sissbruecker]

Description

The dev page (/dev/tooltip.html) for tooltip uses multiple tooltips on the same target. Currently, hovering over the target flashes all tooltips briefly and then only shows the last one that is defined in the markup. Before, it would show all tooltips at the same time.

Expected outcome

It should show all tooltips as it did before.

Minimal reproducible example

web-components/dev/tooltip.html

Lines 34 to 49 in 7dcd7cb

	<div id="wrapper">
	<div id="target">Save</div>
	</div>
	<vaadin-tooltip text="BS" position="bottom-start" for="target"></vaadin-tooltip>
	<vaadin-tooltip text="B" position="bottom" for="target"></vaadin-tooltip>
	<vaadin-tooltip text="BE" position="bottom-end" for="target"></vaadin-tooltip>
	<vaadin-tooltip text="ST" position="start-top" for="target"></vaadin-tooltip>
	<vaadin-tooltip text="S" position="start" for="target"></vaadin-tooltip>
	<vaadin-tooltip text="SB" position="start-bottom" for="target"></vaadin-tooltip>
	<vaadin-tooltip text="TS" position="top-start" for="target"></vaadin-tooltip>
	<vaadin-tooltip text="T" position="top" for="target"></vaadin-tooltip>
	<vaadin-tooltip text="TE" position="top-end" for="target"></vaadin-tooltip>
	<vaadin-tooltip text="ET" position="end-top" for="target"></vaadin-tooltip>
	<vaadin-tooltip text="E" position="end" for="target"></vaadin-tooltip>
	<vaadin-tooltip text="EB" position="end-bottom" for="target"></vaadin-tooltip>

Steps to reproduce

1. Open the dev page
2. Hover over target
3. Observe how all tooltip briefly flash and only the last one remains visible

Environment

Vaadin version(s): 24.5 alpha11

Browsers

No response

[web-padawan]

I recall it's been broken for a while. IIRC this might be due to the logic that ensures only one tooltip is visible at a time (excluding manual tooltips).

[sissbruecker]

Yeah, this isn't really a sensible use case, I just wanted to note it down. We can consider just updating the dev page, or maybe add some feedback for the developer that multiple tooltips on the same target are not supported.

[rolfsmeds]

Labelled this as documentation since we should at least mention somewhere that multiple simultaneous tooltips on the same element are not supported.