Qt 5.12.2 app on Android crashing after QtConcurrent::run() -> slot finished()

This bug happens only on Qt 5.12 (5.12.2 my version) and only on Android (SDK 26, NDK r19c, JDK 1.8.0)

Simple code to reproduce. In constructor:

this->watcherI = new QFutureWatcher<int>;
connect(this->watcherI, SIGNAL(finished()), this, SLOT(onJobFinished()));

Then in starter method:

this->watcherI->setFuture(QtConcurrent::run(this, &concurrent::job));

Then after successful execution slot onJobFinished app on Android crashing. Not on Windows.

With message:

F libc : Fatal signal 5 (SIGTRAP), code 1 in tid 2399 (Thread (pooled))

I have attached project that reproduce this bug.

Btw also I found another bug on Qt 5.12.2/Android with QSqlDatabase component. All these bugs in working project, that working fine on Qt 5.11.2 on all platforms. Whats wrong with Qt 5.12/NDK r19c? I am scared that there are much more bugs such it.