Oh wow, thanks for replying so quickly.
Yes I did with one from here yesterday
and just now I’ve tried to copy tab characters from several other places just in case, but they all turned out duds 
I’ve also looked at the cells in the Coda Android App, Vivaldi mobile browser, Chrome desktop browser (yesterday’s screenshot being from Vivaldi desktop) to make sure it’s not some weird browser thing, but I’m none the wiser again.
If it’s helpful context, I’m so far completely self taught in anything computer science, coding, RegEx, formulas etc. so the sky’s the limit as far as possible blindspots are concerned, all I know is that I know nothing except “Being able to precisely control alignment of concatenated objects/strings of differing lengths within a cell” would be a valuable skill to have, like when creating a work breakdown structure as shown in this post, which I’ve copied and since somewhat modified (not to complete satisfaction ofc)
