Theme asset file not rendering in extension app block

Extensions
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1

Recently I saw issue in liquid app block, in which theme asset file not rendering.
default theme liquid box rendering same code : https://imagelink.click/OLywoR.png
But in custom liquid app block not rendering same code : https://imagelink.click/BtQhZq.png

2

Hi Usman,

If you do a diffcheck on the code for the two blocks what is the difference?

3

Can you explain me the way of rendering theme snippets and assets file in app block liquid using liquid formate?