Did you give it a shot with the "Paulownia Panes" windows? It MIGHT be specific to that type I honestly haven't tried it with any other windows.
-Update I tried it and the bug doesn't work with "The upright window".
If you want to try it I uploaded the lot to the gallery I believe. It's "14 Shy Something Lane". Originally it was placed on the lot to the right of the Raffia Quinta named basegame lot in Oasis Springs.
@somberlysober Thank you for the updated information! Yes, you are correct... when I do the same process with 'Paulownia Panes' windows I get the following results - not only the size differences but it pushed the one over on the 'by room' placement so it's not centered:
And when I try 'Wide Stall Window'. it had the sizing difference but it did center the window on the 'by room' section (and it definitely elongated on the window placed manually on the diagonal wall):
Thank you for sharing your lot also! It seems that, from our experiments, there are several inconsistencies in the way that windows on diagonal walls manually placed and when placing 'by room' are behaving.
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Edit... Not sure if my info is relevant, but I am on Mac, all packs and fully updated, no Mods or CC, version 1.104.58.1230
