All noto-full Non-Latin Families are downloaded on IE11

[jonboiser]

Observed behavior

When viewing Kolibri on IE11, a large number of Noto Sans Families are downloaded, when only a subset should be downloaded.

log:

NFO     "GET /static/kolibri.core.default_frontend/kolibri.core.default_frontend-0.13.0.dev0%2Bgit.20190916195927.js HTTP/1.1" 200 1681183
INFO     "GET /static/assets/fonts/noto-full.en.modern.css?v=0.13.0.dev0+git.20190916195927 HTTP/1.1" 200 17848
INFO     "GET /static/assets/fonts/noto-full.NotoSans.700.woff HTTP/1.1" 200 433488
INFO     "GET /static/assets/fonts/noto-full.NotoSansArabic.400.woff HTTP/1.1" 200 163056
INFO     "GET /static/assets/fonts/noto-full.NotoSans.400.woff HTTP/1.1" 200 432828
INFO     "GET /static/assets/fonts/noto-full.NotoSansArabic.700.woff HTTP/1.1" 200 176396
INFO     "GET /static/assets/fonts/noto-full.NotoSansBengali.400.woff HTTP/1.1" 200 181168
INFO     "GET /static/assets/fonts/noto-full.NotoSansBengali.700.woff HTTP/1.1" 200 190484
INFO     "GET /static/assets/fonts/noto-full.NotoSansGujarati.400.woff HTTP/1.1" 200 186112
INFO     "GET /static/assets/fonts/noto-full.NotoSansGujarati.700.woff HTTP/1.1" 200 187244
INFO     "GET /static/assets/fonts/noto-full.NotoSansDevanagari.400.woff HTTP/1.1" 200 181776
INFO     "GET /static/assets/fonts/noto-full.NotoSansDevanagari.700.woff HTTP/1.1" 200 190804
INFO     "GET /static/assets/fonts/noto-full.NotoSansMyanmar.400.woff HTTP/1.1" 200 183340
INFO     "GET /static/assets/fonts/noto-full.NotoSansMyanmar.700.woff HTTP/1.1" 200 194876
INFO     "GET /static/assets/fonts/noto-full.NotoSansTelugu.400.woff HTTP/1.1" 200 170496
INFO     "GET /static/assets/fonts/noto-full.NotoSansTelugu.700.woff HTTP/1.1" 200 174208
INFO     "GET /static/assets/fonts/noto-full.NotoSansArmenian.400.woff HTTP/1.1" 200 28176
INFO     "GET /static/assets/fonts/noto-full.NotoSansArmenian.700.woff HTTP/1.1" 200 28340
INFO     "GET /static/assets/fonts/noto-full.NotoSansCanadianAboriginal.400.woff HTTP/1.1" 200 78960
INFO     "GET /static/assets/fonts/noto-full.NotoSansCanadianAboriginal.700.woff HTTP/1.1" 200 79944
INFO     "GET /static/assets/fonts/noto-full.NotoSansCham.400.woff HTTP/1.1" 200 28500
INFO     "GET /static/assets/fonts/noto-full.NotoSansCham.700.woff HTTP/1.1" 200 29184
INFO     "GET /static/assets/fonts/noto-full.NotoSansEthiopic.400.woff HTTP/1.1" 200 269988
INFO     "GET /static/assets/fonts/noto-full.NotoSansCherokee.400.woff HTTP/1.1" 200 90848
INFO     "GET /static/assets/fonts/noto-full.NotoSansCherokee.700.woff HTTP/1.1" 200 104848
INFO     "GET /static/assets/fonts/noto-full.NotoSansEthiopic.700.woff HTTP/1.1" 200 269096
INFO     "GET /static/assets/fonts/noto-full.NotoSansGeorgian.400.woff HTTP/1.1" 200 37332
INFO     "GET /static/assets/fonts/noto-full.NotoSansGeorgian.700.woff HTTP/1.1" 200 38536
INFO     "GET /static/assets/fonts/noto-full.NotoSansGurmukhi.400.woff HTTP/1.1" 200 52744
INFO     "GET /static/assets/fonts/noto-full.NotoSansKannada.700.woff HTTP/1.1" 200 121952
INFO     "GET /static/assets/fonts/noto-full.NotoSansHebrew.700.woff HTTP/1.1" 200 23876
INFO     "GET /static/assets/fonts/noto-full.NotoSansJavanese.700.woff HTTP/1.1" 200 114300
INFO     "GET /static/assets/fonts/noto-full.NotoSansGurmukhi.700.woff HTTP/1.1" 200 55064
INFO     "GET /static/assets/fonts/noto-full.NotoSansJavanese.400.woff HTTP/1.1" 200 121184
INFO     "GET /static/assets/fonts/noto-full.NotoSansHebrew.400.woff HTTP/1.1" 200 23544
INFO     "GET /static/assets/fonts/noto-full.NotoSansKannada.400.woff HTTP/1.1" 200 117668
INFO     "GET /static/assets/fonts/noto-full.NotoSansKhmer.400.woff HTTP/1.1" 200 125392
INFO     "GET /static/assets/fonts/noto-full.NotoSansKhmer.700.woff HTTP/1.1" 200 125628
INFO     "GET /static/assets/fonts/noto-full.NotoSansLao.700.woff HTTP/1.1" 200 31244
INFO     "GET /static/assets/fonts/noto-full.NotoSansLao.400.woff HTTP/1.1" 200 29916
INFO     "GET /static/assets/fonts/noto-full.NotoSansMalayalam.400.woff HTTP/1.1" 200 103456
INFO     "GET /static/assets/fonts/noto-full.NotoSansMalayalam.700.woff HTTP/1.1" 200 108868
INFO     "GET /static/assets/fonts/noto-full.NotoSansOriya.400.woff HTTP/1.1" 200 142616
INFO     "GET /static/assets/fonts/noto-full.NotoSansSinhala.400.woff HTTP/1.1" 200 296612
INFO     "GET /static/assets/fonts/noto-full.NotoSansOriya.700.woff HTTP/1.1" 200 137940
INFO     "GET /static/assets/fonts/noto-full.NotoSansSinhala.700.woff HTTP/1.1" 200 328332
INFO     "GET /static/assets/fonts/noto-full.NotoSansSymbols.400.woff HTTP/1.1" 200 232468
INFO     "GET /static/assets/fonts/noto-full.NotoSansSymbols.700.woff HTTP/1.1" 200 233360
INFO     "GET /static/assets/fonts/noto-full.NotoSansTamil.400.woff HTTP/1.1" 200 68416
INFO     "GET /static/assets/fonts/noto-full.NotoSansTamil.700.woff HTTP/1.1" 200 71480
INFO     "GET /static/assets/fonts/noto-full.NotoSansThaana.400.woff HTTP/1.1" 200 18000
INFO     "GET /static/assets/fonts/noto-full.NotoSansThaana.700.woff HTTP/1.1" 200 17812
INFO     "GET /static/assets/fonts/noto-full.NotoSansThai.400.woff HTTP/1.1" 200 35712
INFO     "GET /static/assets/fonts/noto-full.NotoSansThai.700.woff HTTP/1.1" 200 36640
INFO     "GET /static/assets/fonts/noto-full.NotoSansTibetan.400.woff HTTP/1.1" 200 689432
INFO     "GET /static/assets/fonts/noto-full.NotoSansTibetan.700.woff HTTP/1.1" 200 648320

Expected behavior

Only the minimal set of noto sans families are downloaded.

User-facing consequences

Extra font files are downloaded

Errors and logs

…

Steps to reproduce

Load Kolibri in an IE11 browser, like in browserstack. If you can view the logs, you will see something similar as above.

Context

Kolibri 0.13.1