The problem is evidently in the rendering of Workplace Sans Bold...I can only guess that it's doing this because mzfntcfgft is unable to find or load the actual Workplace Sans Bold font.
I agree, that is certainly what it looks like. What is strange is that the BOLD version of the font is certainly present in the \psfonts directory, here are all of the WPS*.ttf files that I have:
=== START ===
[G:\psfonts]dir wpsu*
The volume label in drive G is OS2.
The Volume Serial Number is xxxx:xxxx.
Directory of G:\psfonts
3-28-16 1:43a 163016 0 wpsu.ttf
10-16-12 11:55a 59984 0 wpsu.ttf.0_91
3-28-16 1:43a 163016 0 wpsu.ttf.1_01
8-15-15 3:43a 96328 0 wpsu.ttf.bitmap-1_00
3-28-16 1:47a 183468 0 wpsu.ttf.bitmap_1_01
3-28-16 1:44a 144696 0 wpsub.ttf
10-17-12 2:00p 56700 0 wpsub.ttf.0_91
3-28-16 1:44a 144696 0 wpsub.ttf.1_01
8-15-15 3:51a 97736 0 wpsub.ttf.bitmap-1_00
3-28-16 1:48a 176356 0 wpsub.ttf.bitmap_1_01
10-16-12 11:57a 168948 0 wpsul.ttf
10-16-12 11:57a 168948 0 wpsul.ttf.0_91
12 file(s) 1623892 bytes used
4579819 K bytes free
=== STOP ===
The WPS font browser folder certainly shows the BOLD version and selecting it opens up a sample window.
What else could I check? I suppose I could also un-install that particular font and re-install?