FASTQ containing multiple sequences does not work with Sanger Analysis Workflow

As a workaround from this https://local.ugene.unipro.ru/tracker/browse/UGENE-3257 , I am now using FASTQ files provided by my sequencing service to analyze Sanger sequencing results.

For one reference sequence, I have a FASTQ file containing all the Sanger reads + the associated quality values.

When I add the file to the input of the "Trim and Align Sanger Reads" workflow, it doesn't work.

But if I manually split the file to many FASTQ files (each one containing only one sequence + its quality values) and add all of them to the input of the workflow, it does work.

It's a bit painful to have to process the FASTQ file before running the workflow.

Do you know how I could fix that ?