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Bug
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Resolution: Awaiting Response
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None
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Minecraft 1.14.3
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None
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Linux 5.1.7-arch1-1-ARCH #1 SMP PREEMPT Tue Jun 4 15:47:45 UTC 2019 x86_64 GNU/Linux
openjdk version "1.8.0_212"
OpenJDK Runtime Environment (build 1.8.0_212-b01)
OpenJDK 64-Bit Server VM (build 25.212-b01, mixed mode)
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Unconfirmed
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(Unassigned)
Setting any X mouse device's Coordinate Transformation Matrix to anything other than:
[ 1 0 0 ]
[ 0 1 0 ]
[ 0 0 1 ]
will result in any movement of the mouse becoming amplified and moving up-left. I tested this by using the same mouse and setting its transformation matrix to [1 0 0 0 1 0 0 0 1], [0.5 0 0 0 0.5 0 0 0 0.5] and [0.25 0 0 0 0.25 0 0 0 0.25]. Only the first test had the expected result of moving the camera normally.
In 1.14.2 and .1, the mouse moved normally. In 1.14.3 the mouse started this behaviour, possibly due to bugfix MC-144107.
A workaround I used to change the mouse sensitivity is to set the X mouse device's "libinput Accel Speed" to a number between -1 and 0, according to my desired sensitivity (if using libinput).