Clicking on a box doesn't work on iPad

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I am using the following HTML code in a text box to trigger an action by Javascript:

Code: Select all

<a href="" id="#Hotspot" style="display: block;width: 100%;height: 100%; color: rgba(255,255,255,0);">Tooltip</a>

This code is not visible to the user. My event handler is as simple as:

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	$("#Hotspot").on("click", function(){
		showTooltip( "xyz", tooltips );
		return false;
	});

Where the function showTooltip takes care of displaying the appropriate content.
Now, this solution works flawlessly on the desktop (Mac) and in all major browsers.

However, it doesn't work at all on an iPad 2019. The click event simply doesn't get fired.
Other click events outside the pano work just fine.
I tried with Safari, Chrome and Firefox: exact same result.

I am using pano2VR 6.1.1
My iPad runs the latest iPadOS version.

Does anyone have any thoughts on this?

Thank you very much for your help!