Hi together,

tested with InDesign 2020 and also with the current InDesign 2023 version 18.1.0.51 on Windows 10.

If I apply one of the two Adobe World-Ready Composers to text in a table the footnote references in the text will vanish.
The footnote texts themselves do not. It's just the rendering of the footnote reference numbers.

See also this thread at Adobe InDesign Forum:

Footnotes reference number disappearing when aligning numbers in table
Gabriel23717186abix, 4 Hours ago
https://community.adobe.com/t5/indesign-discussions/footnotes-reference-number-disappearing-when-aligning-numbers-in-table/td-p/13533021

Download sample documents from my Dropbox account:
230127-1-Footnote References disappear in Table.zip

https://www.dropbox.com/s/y89vr0168spqa92/230127-1-Footnote%20References%20disappear%20in%20Table.zip?dl=1

Also see the discussion at Adobe Prerelease:
https://forums.adobeprerelease.com/indesign/discussion/2223/epv-footnote-references-vanish-in-tables-when-the-adobe-world-ready-composer-is-applied#latest

Regards,
Uwe Laubender
( Adobe Community Expert )