I have custom icons that work fine on IOS and Android. When I deploy on the Web, a crossed out box appears in each place in the App where my icon should appear.
shadow
side-channel-attacks
hdrimages
runtimeexception
postasync
tabris-js
httpwebresponse
1wire
code-editor
webhttpbinding
web-scraping-language
mousehover
restrict
path-separator
ucx
mediaelement.js
optional-arguments
text-justify
google-cloud-kms
subgrid
openkm
compound-drawables
servicecontroller
r-s4
h2o
android-icons
cursor-position
mssticker
floor-division
rippled