SAFE_POINT when copy alignment in the clipboard

Scenario:

1. Open an alignment (e.g. "_common_data/scenarios/msa/ma2_gapped.aln").
2. Open the "General" tab on the options panel.
3. Click the "Copy" button in the "Copy to clipboard" group.
   Current result: the SAFE_POINT is triggered:

   Trying to recover from error: Failed to crop an alignment! at src\gobjects\MultipleSequenceAlignmentObject.cpp:139
   Assertion failed: 0, file src\gobjet\MultipleSequenceAlignmentObject.cpp, line 139