"Classification Report" element generates a file with incorrect name in a specific case

Scenario #1:

1. Create a workflow: "Read FASTQ File with SE Reads" -> "Classify Sequences with CLARK" -> "Classification Report".
2. Set valid parameters. CLARK should work in SE reads mode. Set as input a file with name that ends with "_1", e.g. "reads_1.fastq".
3. Launch the workflow.
   Current state: "Classification Report" produces a result file with name "reads_CLARK_report.txt". As you can see, "_1" suffix was removed.

Scenario #2:

1. Create a workflow: "Read FASTQ File with PE Reads" -> "Classify Sequences with CLARK" -> "Classification Report".
2. Set valid parameters. CLARK should work in PE reads mode. Set as input files with names that ends with "_1" and "_2", e.g. "reads_1.fastq" and "reads_2.fastq".
3. Launch the workflow.
   Current state: "Classification Report" produces a result file with name "reads_CLARK_report.txt". As you can see, suffix was removed.

In the first scenario the suffix shouldn't be removed, because files with single-end reads doesn't have suffixes with such meaning as files with paired-end reads do. In the second scenario suffix should be removed.