macOS/iOS: Fix garbled text under some conditions

There seems to be an issue in CoreText which may cause an existing
font descriptor to give unreliable results if it refers to one of
the system theme fonts. Since we do not know all function calls
or events that may trigger this bug, the safe route is to always
create fresh font descriptors when creating fonts for these
descriptors. The impact on performance should be small, as Qt has
its own internal caches.

[ChangeLog][macOS/iOS][Text] Fixed an issue where text using
one of the system theme fonts would under certain circumstances
display random glyphs.

Task-number: QTBUG-63476
Change-Id: I9e9b253018c63976345eec1439a6b78de2cab869
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>

0 files changed, 0 insertions, 0 deletions