*headdesk* Apparently QTextLayout::FormatRange() does not have an initializing ctor...

uninitialized stuff can lead to _very_ strange results, including being magically resolved
by touching a variable elsewhere in the program.
This should now _finally_ and once-and-for-all fix font formatting issues (if it doesn't, let me know,
then it's caused by something else).
/me goes and sits in a corner now.