for several weeks now the MoodleCloud theme (which I have been using for years without problems) has been wrong in showing blocks.
See the attached image, where I highlighted some wrong characters on the Navigation block with blue circles.
If I switch to another theme (Boost or Classic) the display is ok.
I tried on Firefox and Edge (on Windows 10).
No effect if I clear the theme cache.
Is there any solution? Thanks in advance,