Date Popup no longer uses short/abbreviated names.

See attached screenshot - but the date popup no longer renders the short names.

Looking at the source, I noticed that dayNames, dayNamesShort and dayNamesMin are pretty much using the same array (same thing for the month names):

"dayNames": ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],
"dayNamesShort":["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],
"dayNamesMin":["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],

"monthNames":["January","February","March","April","May","June","July","August","September","October","November","December"],
"monthNamesShort":["January","February","March","April","May","June","July","August","September","October","November","December"],"

A result from the changes made in #953120: Convert date_t() to use new t() context strings?