I am on XWiki 13.4, standart flavor, using the default fontawesome icon theme.
When I edit a template Provider, there is the ‘Icon’ field.
As soon as I place the cursor inside the input element, a Dropdown opens, suggesting that it is loading available icons.
However, the loading doesn’t terminate, I am never shown icons.
Viewing the Network tab I can see, that this click action is loading the url:
/bin/get/IconThemesCode/IconPicker?outputSyntax=plain&action=data_iconthemes
The response is 200 Ok, but it does not contain any data/body, it’s just empty.
I can manually write a string in that Icon-field.
When the string for example matches ‘file-text’, then I do see the icon .fa-file-text-o.
it also works with for example fa-star.
However, this only works with some fa icons, others are not are not usable, like .fa-android, fa-mobile, or fa-share-square.