NEW 210050
Cannot detect middle click with bluetooth mouse on iPadOS 13.4 
https://bugs.webkit.org/show_bug.cgi?id=210050
Summary Cannot detect middle click with bluetooth mouse on iPadOS 13.4
Ashley Gullen
Reported 2020-04-06 09:09:02 PDT
Middle clicks with a bluetooth mouse on iPadOS 13.4 register as a left click instead of a middle click. The 'button' property of both mousedown and pointerdown events is 0 (for left button), when it should be 1 (for middle button). Demo: https://downloads.scirra.com/labs/ipadosmouse/ It works correctly with the same bluetooth mouse on macOS, so it is not the mouse. I used a Microsoft Bluetooth Mouse (RJN-00002). This breaks any middle mouse button feature in web apps on iPadOS, like dragging the middle mouse button for pan scrolling.
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Radar WebKit Bug Importer
Comment 1 2020-04-07 11:42:20 PDT
<rdar://problem/61402823>
Tim Horton
Comment 2 2020-04-07 13:08:38 PDT
Hmm, indeed, good point! Right now we only have primary and secondary buttons.
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