I have maybe missed something, but I can't write integers in hexadecimal.
I have correctly written:
%i1 ibase:16
%01 16
then
%i2 obase: 10
%02 10
I have checked that obase in hexadecimal works without bugs
%i3 9+2
%o3 B
But ibase doesn't work
%i4 9B9+3
%04 Incorrect syntax: b is not an infix operator
Is a special character needed for inputs in hexadecimal?
Input for alphabetic characters as digits for ibase > 10 was broken until pretty recently, now (Maxima 5.18 or later) it works.
At the command prompt, enter
? ibase
? obase
to get more info.
Not a bug; we can leave this open for a few days and then close it.
Not a bug. Closing this report as "works for me".