Empty tag removed when parsing

[bora-fsd]

Wondering if this is the intended behavior, I have a sample message:

{1:F01ABCDABCDXXXX}{2:I202ABCDABCDXXXXN}{3:{108:TR2021101995111}}{4:
:20:2021101995111
:21:ABCDAB1111CCCCCC
:32A:111111ABC11000000,
:52A:ABCDABABXXX
:57A:ABCDABCDXXX
:58A:/1111-0001
ABCDABABXXX
-}{5:}

after parsing this message, the last block (5) does not appear in the message. Is there a way to have block 5 parsed, even if it's empty?