Version:

• listmonk: v5.0.0
• OS: Docker v28.0.4
• Browser: Chrome arm64 v136.0.7103.48

Description of the bug and steps to reproduce:

1. Create a campaign with non-visual format
2. Select a non-default template
3. Save the campaign
4. Optional: End Browser Session (not necessary but ensures 100% reproducibility)
5. Open the campaign again and switch to content tab
6. Template Dropdown Selector is now set to the Default Template

Very unpleasant bug, already sent one mailing with the wrong template selected.