I had a number of interesting experiences with the ICML file type recently.

I am using Studio 2021, latest version, and InDesign 2020 (not the latest version - that is currently 2021).

First I had the number verifier app report a number omission of a tag that's not even visible in the editor - not even if I "display all content" as opposed to "all segments". (https://community.sdl.com/product-groups/translationproductivity/f/openexchange_applications/34245/number-verifier-reads-tag-content)

Second, I had Studio replace green source language text with brown target language text, which I would also attribute to tag handling:

The view of the screenshot is "all content", the tags below the segment define the taxt color to be green.

The colors in InDesign are identical to the ones in Studio: Source is green, target is brown.

Any clue why that could be so? I would gladly provide my files to Paul if that's a help.

Daniel