Pallete showing weird symbols

Hi there,

We’ve created an interactive process modeling course with, sometimes, but not always we and our users see some weird symbols in the pallete. Sometimes it’s solved with refreshing, sometimes it remains like this for a while. It’s while surfing on Google Chrome on Windows. I have attached a screenshot. Is it something you’ve seen before? There’s no errors returning through the devtools.
MicrosoftTeams-image (29)