IOS 13 Ruble currency symbol missing. Shows empty square instead - iphone

After a recent IOS 13 update a Ruble currency symbol disappeared from all my WordPress sites that use woocommerce when browsing from Iphones. It just shows an empty rectangle. I tried to fix that with adding a custom symbol through functions.php but with no luck so far. Is there a way to fix that? Thank you for your answers!
EDIT
Well i ve just found a solution. The issue is that this Ruble symbol is in the latin extended set of google fonts. When i changed my standard body fonts from wordpress options to google roboto font with latin extended set - all is back to normal. Thanks to everyone!)))

The issue was that this Ruble symbol is in the Latin extended set of Google fonts.
When I changed my standard body fonts from Wordpress options to Google Roboto font with Latin extended set, all was back to normal.

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Flutter - Text Widget does not render currency icons

In my application, I have a screen that shows pricing. However, the currency icon does not appear correctly in some places (look at the amount 7000). This problem is more frequent on iOS devices, with a few occurrences on Android devices.
The information is retrieved in the following manner:
Text("₹ 7000.00") // in application the pricing is retrieved from api call.
The currency icon is included in the data I receive from the api request. "₹7000" is an example.
The font used is Gotham Rounded. Is this due to the font's inability to render currency icons? What is the best way to resolve this problem?
It's better to use Unicode characters for currency symbols because most of the symbols are not yet supported in flutter so your device does not understand the string so it does not render it on mobile.
Unicode characters on the other hand could be easily translated after compilation
You can find unicode characters for different symbols here
So you have something like this instead
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How to dynamic bind Unicode to page title

I use Durandal for my website (http://cuoidiku.com/).
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Facebook app center, translation of "detailed description" field returns error

I have my default language set as English (US) in the facebook app settings.
The "detailed description" field is filled with english language content.
In the section "Translate your app for additional languages" I have "detailed description" field with original english gray fade color text.
When I paste there the text translated into polish and trying to save it, I get the error message:
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I've had this kind of problem before with the translation features on FB.
Firstly - if you use completely different text for testing purposes does that save?
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You can report bugs to Facebook at:
https://developers.facebook.com/bugs/
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I tried to output some Unicode text using both iText-2.1.7 and iText-5.1.3.
While Devanagari characters got stacked properly, I am unable to see Tibetan characters properly stacked.
In stead, each character is occupying a separate space. I tried with BaseFonts both ARIALUNI.TTF and TibMachUni-1.901b.ttf but without success.
Googling gave me a post of 2009 which indicated it was not readily possible then.
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None of the current iText developers understand Hindi or any other
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Joomla 1.5 & Indic Unicode Fonts - How-to?

I am using Inscript Keyboard to directly type into TinyMCE. However when I click on save, all the characters appear as question marks on website and even in article list on admin side.
How I should solve the problem?
I am specifically talking about Marathi but the problem-solution might be same for all Devnagrari fonts.
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