active message call: the border should not be cut when it's the second message in a row

Scenario

• Alice sends a message in a swarm
• Just after, she starts a call in the same swarm

Expected

• Bob should receive the "Alice started a call" message displayed in a complete rectangle

Current result

• the border is cut in the top left corner

assigned to @cberthet

mentioned in commit 9c6bdec0

closed