Kartaview plugin causes warnings "CSS parser not implemented yet" and "Could not create font"

[Polarbear-j]

JOSM/1.5 (18193 en_GB) Mac OS X 10.14.6
+ KartaView (374)

Upon the start of josm, it creates tons of warnings in the console log:

2021-09-03 10:11:37.901 WARNING: CSS parser not implemented yet
2021-09-03 10:11:37.901 WARNING: CSS parser not implemented yet
2021-09-03 10:11:37.902 WARNING: CSS parser not implemented yet
2021-09-03 10:11:37.902 WARNING: CSS parser not implemented yet
2021-09-03 10:11:37.902 WARNING: CSS parser not implemented yet
   (much more of the same)

2021-09-03 10:11:43.173 WARNING: Could not create font Roadgeek 2005 Series F
2021-09-03 10:11:43.178 WARNING: Could not create font Roadgeek 2005 Series F
2021-09-03 10:11:43.181 WARNING: Could not create font Roadgeek 2005 Series D
2021-09-03 10:11:43.181 WARNING: Could not create font Roadgeek 2005 Series F
2021-09-03 10:11:43.182 WARNING: Could not create font Roadgeek 2005 Series D
2021-09-03 10:11:43.182 WARNING: Could not create font Roadgeek 2005 Series F
2021-09-03 10:11:43.185 WARNING: Could not create font Roadgeek 2005 Series D
2021-09-03 10:11:43.186 WARNING: Could not create font Roadgeek 2005 Series D
2021-09-03 10:11:46.288 WARNING: Could not create font Roboto-Bold, Roboto
2021-09-03 10:11:46.303 WARNING: Could not create font Roboto-Bold, Roboto
2021-09-03 10:11:46.317 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.318 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.320 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.320 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.326 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.327 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.330 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.331 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.344 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.344 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.347 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.347 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.350 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.350 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.352 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.352 WARNING: Could not create font ClearviewHwy-1B
2021-09-03 10:11:46.539 WARNING: Could not create font Interstate-Bold, Interstate
2021-09-03 10:11:46.540 WARNING: Could not create font Interstate-Bold, Interstate

[anonymous]

josm Revision:18275, issue still present.

also reported as ​https://github.com/kartaview/josm-plugin/issues/47

[skyper]

See #21143 for a related core ticket concerning Could not create font.
Icons should not include font.

[jBeata]

@skyper should we remove only the font-family property from the icons, or all the other font properties like size, style?
Removing only the font-family fixed the "Could not create font X" warnings, but not the others.

[skyper]

Sorry, no glue.