SysML - No combobox selector in sequence diagram when drawing a sequence

The combobox selector is not displayed for sequence diagram when using SysML blocks for operations.

Steps to reproduce:

  1. Create a SysML block called A
  2. Create a SysML block called B
  3. Add an operation called myOperation to block B
  4. Create a sequence diagram
  5. Drag and drop both A and B to the sequence diagram as a lifeline element
  6. Draw a message from A to B
  7. Problem: the combobox where you can automatically select the operation is not displayed

However, this works perfectly with an UML class.

Video to reproduce:

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