Every second (or so) font do not display in VS viewport

[Raaskot]

I just realized that just every second font on my system list is showing up in the text objects and display lags terribly. What is the problem and how can I make it work!?

Video (example with Univers Condensed on display on VectureStyler and Mac Text app):
https://www.jottacloud.com/s/127f67b7eb50ffe40c0a70118c32ca731eb

File:
https://www.jottacloud.com/s/127234606a8e5be4bfa9885abfbd33e4752

[VectorStyler]

@Raaskot I could not replicate the issue.
It could be caused by the specific font. I tried to find Univers Condensed (and TradeGothic also) but the versions I got worked.

If you could send me by email (csraba at vectorstyler.com) a font for which the text box is empty, that could help replicating the issue (font will be deleted once the bug is fixed).