The normal input mode with DPAD sends PlayerAuthInputPackets, which can be used by us server owners to control player movement (e.g. for driving vehicles or flying jetpacks). However, the joystick control scheme on mobile does not yield these packets; all received packets are blank.
This forces mobile players to use DPAD instead of joystick input. Please fix this so joystick controls also send proper PlayerAuthInputPackets.
Please edit your report to change the Affected Version to the version shown on the Minecraft title screen