Qt 5.12.3 release is the third LTS patch release from the series has been announced and it comes with a number of In computing technology, a bug is an unintentional coding error in a computer application program, hardware device or operating system. Bugs can typically cause annoying computer glitches, or cause more serious problems including life-threatening situations. In 2018 and 2019 a bug in the sensor on the Boeing 737 Max caused Lion Air Flight 610 and Ethiopian Airlines Flight 302 to... More fixes and other improvements.
Qt 5.12.3 release is available for the update using the maintenance tool of the online installer. If you do not have it you can grab a copy from the Qt download page here.
Commercial users can upgrade from the account portal here.