After just over three years since it was first released, Qt 5.6 LTS Support has finally come to an end. This means that the version will no longer receive patch level releases, 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 and security fixes.
Support has been dropped in favor of Qt 5.9 LTS and related patch level releases. In spite of this, it is better advised to upgrade to the latest Qt 5.12 LTS patch level release.
For those who cannot upgrade for any reason can still sign up for extended support at an additional cost for both Standard as well as Premium Support.