[Bug 402892] Re: Mouse cursor gets stuck in "drag and drop" mode

[Sergey Karapetyan]

Same problem on Lubuntu 14.04 
Touchscreen: (MasterTouch MT-500 USB), supports only single touch. 
Mouse not connected.

problem appears in next apps:
- Chromium: 62.0.3202.75 
- Firefox 28.0

Sometimes MouseUp just not firing: 
https://prnt.sc/hefody

then i close Chromium / Firefox with ALT+F4

but mouse still stuck in "MouseDown" state _systemwide_ :
https://www.dropbox.com/s/bf57bg47f3zsq2m/test.mp4?dl=0

Even if I connect the mouse to the computer after the problem occurs -
the left mouse button will not work.

But mtpaint works fine! There is some difference in how mtpaint and
(chromium, firefox) works with mousedown / mouseup events.


Any ideas? I need use touchscreen and don't need mouse. So i can't disable the touchscreen as recommended, because this will make the whole system unusable.

Thanks

** Also affects: chromium (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: firefox (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/402892

Title:
  Mouse cursor gets stuck in "drag and drop" mode

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