What Operating System are you using (both controller, and any agents involved in the problem)?
Windows 10, Windows 11

Reproduction steps
Step 1: On any node's page, click on "Mark this node temporarily offline"
Step 2: Add optional message

Expected Results
Jun 8, 2024, 3:08:47 PM
Disconnected by first_name.last_name@company.com : Test

Actual Results
Jun 8, 2024, 3:08:47 PM
Disconnected by <user_ID>: Test