InDesign shows rectangles in place of georgian alphabet

[MICZZZ]

I'm forced to work with Georgian alphabet (not being a Georgian myself) and InDesign acts... weird in that field. Here is what I do, and what goes... not as it should:

1. I have google document containing georgian texts to be used in InDesign project - the text in this document is displayed properly, and the font used is Inter Tight from Google

2. I have installed Inter Font family on my computer - Indesign have access to this font, no problem there.

3. I copy text from google docs and paste it into textbox in InDesign and choose Inter Regular to be used for that part of text... nad here comes the hell - I dont see any proper characte, all of them are replaced with rectangles.

5. I serached for other fonts with georgian alphabet and found few (for example Noto Sans Georgian, BPG Arial). All of them, including Inter Tight, actually CAN display georgian alphabet inside of InDesign - those strange georgian "letters" apear as they should in Glyphs window - but for some reason georgian characters can be put in the text frame only by double-clicking individual glyphs in Glyphs window, an NOT via Copy/Paste (CTRL+C/CTRL+V. 

6. I have also tried to place a linked document (a txt file containing georgian words, displaying properly in Notepad++) instead of copy/pasting the text - and again, I only get only rectangles.

Here is short clip showing my problem: https://youtu.be/fEGq5xv4o10

What I understand from all of this:

1. There is NOTHING WRONG with the font files - they CAN display Gergian alphabet.
2. Other software on my system CAN DISPLAY this alphabet properly also (Notepad++).

3. Therefore, my suspition is - there is something wrong in a way InDesign handles this sh*t 🙂

And my question is - obviously 🙂 - what to do to make it work?

[MICZZZ]

So, in the meantime I have stumbled upon a workaround for my problem. It is not a proper solution, because I still actually DON"T UNDERSTAND what is going on here, but it could be some sort of help for others also dealing with this sh*t.

It appears that when you get the rectangles in the text box, you should do as follows:

1.  Copy geaorgian text from the source document (ctrl+c).
2.  In InDesign choose Type Tool (T).
3. Before you create a text box you should choose the font which is able to display georgian alphabet, meaning: a font containing glyphs which represent georgian alphabet (you can check this in Glyphs window). So when you create the text box leter on in step 4, it should be already set to use that particular georgian font (I believe you can choose the font for that text box also after you create it, but.. .. . test it on your own, I am sick of experimenting with that magic ;)). In my case that font was Nato Sans Georgian, but I presume it should work with other georgian fonts also.
4. Create a text box.
5. From the Glyphs window (Window > Type & Tables > Gluphs) pick a random georgian alphabet character and place it in the text box by double-clicking.
6. With a Type Tool (T) select the newly placed georgian glyph in the text box
7. While georgian glyph being selected in the text box, replace it by pasting the georgian text coppied from a source document in step 1

Here is a short clip depicting this peculiarity: https://youtu.be/gq-ZP5Dp9gk