Text Markup Display Issues (Shadow default?)

Hi everyone,
we try to work around the missing markup options in combination with the localization and realized that the text is shown differently as soon as markup is enabled.

It seems like the text gets shadow lines, even if you just click on “Markup enabled” and don’t add any tags.

Here you can see it with Open Sans but it also happens for Arial and other fonts.
My workaround is to actively set the shadow color to the color of the font, so it doesn’t get noticed anymore.

Seems like a bug, any thoughts on this?

Yes, that does look like a bug, created a ticket: