No default success message displayed after process action in Site Pages if there was an error (for example: non-supported type change) before the form submission

• Type: Regression Bug
• Status: Closed
• Resolution: Won't Fix
• Affects Version/s: 6.2.0 CE GA1, 6.2.10 EE GA1
• Fix Version/s: 6.2.0 CE GA1, 6.2.10 EE GA1
• Component/s: Pages > Page Administration
• Labels: None
• Fix Priority: 3

1. Add page "p1"
2. Add a child-page to "p1": "p1.1"
3. Try to change the type pf "p1" to "Link to URL" >>> Error message occurs as expected.
4. Try to do any edit on the form, for example: change the name of the page from "p1" to something else. Save.

>>> Action gets processed successfully (in terms of the result), but the previous error messages are still displayed and no default success message appears.