UGENE crashes on MSA aligning after clicking to the "Consensus" label

Scenario:

1. Open "data/samples/CLUSTAL/COI.aln".
2. Click to the "Consensus" label.
3. Click to the "Align" button on the toolbar.
4. Select "Align with MUSCLE..." item in the popup menu.
5. Click "Align" button in the dialog.
   Actual state: the are errors in the log or UGENE crashes. The log contains the following text:

   [DETAILS][11:01] Registering new task: MUSCLE align 'COI.aln'
   [ERROR][11:01] Can't create a common user modifications step, previous one is not complete!
   [ERROR][11:01] Trying to recover from error: Can't create a common user modifications step, previous one is not complete! at src\dbi\DbiConnection.cpp:68
   [ERROR][11:01] Trying to recover from error: Can't create a common user modifications step, previous one is not complete! at src\util\MultipleSequenceAlignmentImporter.cpp:51
   [ERROR][11:01] Trying to recover from error: Can't create a common user modifications step, previous one is not complete! at src\support\SimpleWorkflowTask.cpp:155
   [TRACE][11:01] Promoting task {MUSCLE align 'COI.aln'} to 'Prepared'
   [INFO][11:01] Starting {MUSCLE align 'COI.aln'} task
   [TRACE][11:01] Promoting task {Workflow wrapper 'MUSCLE align 'COI.aln''} to 'Prepared'
   [TRACE][11:01] Promoting task {MUSCLE align 'COI.aln'} to 'Running'
   [TRACE][11:01] Promoting task {Workflow wrapper 'MUSCLE align 'COI.aln''} to 'Running'
   [TRACE][11:01] AppMemory: 201Mb; Locked memory AppResource: 160/32445; SQLite memory 0Mb, max 0Mb
   [ERROR][11:01] Trying to recover from error: SimpleMSAWorkflow4GObjectTask::getResult. No task has been created. at src\support\SimpleWorkflowTask.cpp:225
   [ERROR][11:01] Trying to recover from error: The alignment alphabet is NULL! at src\util\MsaDbiUtils.cpp:778
   [TRACE][11:01] Promoting task {Workflow wrapper 'MUSCLE align 'COI.aln''} to 'Finished'
   [TRACE][11:01] Promoting task {MUSCLE align 'COI.aln'} to 'Finished'