This is very similar to bug #1966418, but only concerns the email edit window.
Before bug #1966418 was fixed, Evolution did not display email contents when running under Wayland. Starting Evolution with WEBKIT_DISABLE_COMPOSITING_MODE=1 worked around the issue.
Now that #1966418 is fixed, displaying email contents works again even without the workaround. However, it's still not possible to write/edit an email. The message area is greyed out and unresponsive.
When running under X or using the above workaround, editing emails works. So the issue seems to be the same as in #1966418, but for the edit window.
This is very similar to bug #1966418, but only concerns the email edit window.
Before bug #1966418 was fixed, Evolution did not display email contents when running under Wayland. Starting Evolution with WEBKIT_ DISABLE_ COMPOSITING_ MODE=1 worked around the issue.
Now that #1966418 is fixed, displaying email contents works again even without the workaround. However, it's still not possible to write/edit an email. The message area is greyed out and unresponsive.
When running under X or using the above workaround, editing emails works. So the issue seems to be the same as in #1966418, but for the edit window.