I tried, on those two versions and the latest autobuild in 35e mode and RSRD, to buy a Shortbow (Composite) (and, for the heck of it, Shortbow (Composite +0)), or their Longbow equivalents, and the mods were not required as they should be. I thought for sure I had used this feature before and was required to do the mods, so I am not sure what changed and when.
Required customization of at least some items, like Gem and Art, did generate the pop-up window about the required customization.
I'm not sure if this is related, but I can't seem to get any item customization to work on the Shortbow (Composite +0) and Longbow (Composite +0).
Edit: I made a second JIRA for this problem, DATA-1023, "Longbow (Composite +0) & Shortbow (Composite +0) not allowing any customization".
MODS:NO disables all Mods from being applied through the customizer.
Wrong issue cancelled.
Needs Code fix