Trimmomatic: input dataset names are incorrectly reported in output dataset titles?

[pjbriggs]

Seen with Galaxy 20.05: the output datasets from the Trimmomatic tool have titles where the names of the input datasets are incorrectly reported, for example:

Trimmomatic on Galaxy3-ob__Illumina_SG_R1.fastq__cb.fastqsanger (R1 paired)

instead of

Trimmomatic on Illumina_SG_R1.fastq (R1 paired)

(Possibly the __ob__ and __cb__ parts are replacements for [ and [ i.e. "open bracket" and "close bracket"?)