Arcade Bug in 11.3? Text Function Format 'MMM' Abbreviation Gives 4-Letter Abbrv of the Month

[cle444]

Hello ESRI community,

After upgrading to Enterprise 11.3, we noticed some Arcade issue. For example, an Arcade expression

Text($feature["inspection_date"], "MMM D")

will give Sept 9 instead of Sep 9. It is supposed to be three letters abbrev.

I guess in the source code, it is getting str [0:3] rather than [0:2]? As a workaround, we changed it to the one below.

Left(Text($feature["inspection_date"], "MMM"),3)+" "+Text($feature["inspection_date"], "D")

Question:

Is Arcade part for Enterprise install, e.g. SDK or internal API? Or is it a configurable thing we can switch to a different Arcard API version?

Many thanks,

Hua