• Create new "Freestyle Project"
• Choose "Editable Email Notification" from "Post-build Actions"
• Click "Advanced Settings..."
• Click "Add Trigger"
• Select "Run condition trigger"
• Click "Add" for "Send To" of "Run condition trigger"
• Choose "Recipient List" (or any other)
• Click "Advanced..." of "Run condition trigger"
• Select "Run Condition" (can leave at "Always")
• Click Jenkins "Save" or "Apply"
• Leave the page, and return to the same configuration

Expected result:

• All configuration was saved, "send to" has a list of selected recipients.

Actual result:

• Most configuration was saved, "send to" list has been cleared.

Please note this only happens for "Run condition trigger". Other triggers save correctly