Embedded fonts still shown in iOS app, but disappeared in Android app

[Alexander Farber]

Good afternoon!

There is a card game written in Apache Flex, which I am trying to keep
alive and while the iOS version still works ok, the Android app has
developed several visual problems over the last 1-2 years:

 1. The card suit symbols are not displayed correctly (my main problem!)
 2. The ActionBar text color is black
 3. The BusyIndicator stopped rotating

Here is my entire CSS file:

@namespace s "library://ns.adobe.com/flex/spark";
@namespace mx "library://ns.adobe.com/flex/mx";

s|ActionBar {
    chromeColor: #0066CC;
    color: #FFFFFF;   /* BUT WHY IS IT BLACK SOMETIMES? */
    titleAlign: center;
    textShadowColor: #000000;
    fontFamily: embFont;
}

@font-face {
    src: url("/assets/fonts/arial.ttf");
    fontFamily: embFont;
    embedAsCFF: false; /* required for StyleableTextField */
    unicodeRange:
        U+0020-U+0040, /* Punctuation, Numbers */
        U+2660-U+2666, /* Card suits - BUT THEY STOPPED WORKING */
        U+0041-U+005A, /* Upper-Case A-Z */
        U+0061-U+007A, /* Lower-Case a-z */
        U+0410-U+0451; /* Cyrillic */
}

s|LabelItemRenderer {
    fontFamily: embFont;
}

And here is an MXML code excerpt showing the callout with card suits and
the "dead" busy indicator:
<s:titleContent>
    <s:Label id="_titleTxt"
             fontWeight="bold"
             color="#FFFFFF"
             width="100%" />

    <s:BusyIndicator id="_busy"
                     includeInLayout="false"
                     visible="false" />
</s:titleContent>

<s:actionContent>
    <s:CalloutButton id="_leftBtn"
                     icon="{VIP}"
                     verticalPosition="after"
                     includeInLayout="false"
                     visible="false">
        <s:VGroup
            width="100%">
            <s:Label id="_left0" fontSize="{Preferans.FONT_SIZE}" />

            <s:Label id="_left1" fontSize="{Preferans.FONT_SIZE}"
color="#FF0000" />
            <s:Label id="_left2" fontSize="{Preferans.FONT_SIZE}" />

            <s:Label id="_left3" fontSize="{Preferans.FONT_SIZE}"
color="#FF0000" />
        </s:VGroup>
    </s:CalloutButton>
...
</s:actionContent>

Adding the following CSS code does not help:

s|LabelItemRenderer {
    fontFamily: embFont;
}

Also I keep installing and recompiling my app in Flash Builder 4.7 with
every new Apache Flex release and make sure, that I don't forget to install
the optional flex-fontkit.jar but that does not help.

Finally here are the screenshot demonstrating my problem:

http://stackoverflow.com/questions/38590070/embedded-fonts-still-shown-in-ios-app-but-disappeared-in-android-app

Thank you for any hints
Alex