Frequently crashing when clicking on build issues on Issues pane

Sometimes when having build issues and double ( ? ) clicking on the issue inside the Issues pane QC just crashes..

[see attached backtrace]

According to the backtrace it looks like the

static ITaskHandler *handler(QAction *)

function retrieves an invalid QVariant and then the qobject_cast() fails/crashes. (I didn't want to just provide a isValid() check as this would just work around the issue)

Not sure if relevant: on the same line I'd have to jump to when clicking on the issue is a breakpoint (and the error marker)