Comment 9 for bug 2042796
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| Daniel van Vugt (vanvugt) wrote Re: Ubuntu 20.04 The edge of the touchscreen is not sensitive | #9 |
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0e1f616
(Get the code!)
My current theory is that when icons are sufficiently small or close to the edge of the screen, it's too easy for the touch "gesture" to start outside of the icon area (e.g. finger touching the display bezel). The pressure then increases and the touch moves into the icon area. But that's much the same as dragging your finger onto an icon. Try it in the app grid and you'll get the same behaviour (icon thinks you're hovering, not clicking).
Such touches may work more often in later Ubuntu releases just by virtue of the actor/theme padding in ubuntu-dock. But I can reproduce the same issue even in newer Ubuntu releases by sliding a finger onto an icon. So I think that's probably the issue -- not really a bug but it feels like a bug if you don't know the touch started outside the icon's sensitive area.
Short term I just suggest good UI design - if it's a touch UI then make sure the icons and buttons are big. Longer term we'll see what we can do about making 20.04 more reliable, but we're busy supporting a lot of different releases.