Surimposed text on webengine maps.bing.com displayed with pixel rotated vertically

Displaying the web site maps.bing.com, the initial display is correct, but after waiting few seconds there is a redisplay and the name of the towns on the map are rotated vertically, see the attached images.

It is seen on both qt-5.12.9, 5.12.5, compiled on Linux ARM32 with both gcc-4.3 and gcc-8.3 (products using gcc-4.3 are on Framebuffer, products using gcc-8.3 are on Wayland).

It looked like working on qt5-webengine 5.11.1

I wonder if it is in our environment or if you can reproduce?