I have bought above display last year and was working perfectly with raspberry pi (this was Rev2.2). Lately bought 4 more displays (rev3.1) but these are not working properly with multitouch.
Pressing and holding ButtonA then pressing ButtonB, this stays pressed and is released only when ButtonA is released.
This issue can be simulated using this website in Chromium - https://naqtn.github.io/WBBMTT/touch-tester.html
Any help?