I understand the disappointment. We were disappointed, as well, after pouring so many hours into providing rich designer support only to have it all deprecated by changes in the VS designer APIs. We understand why Microsoft had to make the change, but porting to the new API's was not going to be a simple task. In our interactions with users, we found the vast majority never used the designers anyway and worked with XAML directly. Those who use MVVM (which is widely popular) also rarely benefit from any designer-based functionality.
Ultimately, we decided to limit our investment in designer-specific functionality and focus our efforts on ensuring our controls work with the default XAML designer surface.
When responding to your post yesterday, we also recognized that our existing documentation on designer support needs to be updated to indicate compatibility changes with Visual Studio versions. Updating the troubleshooting topic is a great suggestion, so thank you for sharing that as well. We tend to update the troubleshooting topic in response to common or frequent support inquiries, and the more limited designer functionality in VS 2022 is, quite honestly, just not something users have been asking about even though, as you noted, VS 2022 has been out for a while now.
I know this is disappointing. We get that. If you can share which product you are using and which designer functionality you are looking for in VS 2022, we can include your feedback on the development roadmap as we prioritize new work.
Regarding screenshots, those currently aren't directly supported by the forums, but you can always post a link to an image from a third-party sharing service. Alternatively, you can submit a ticket to our support address with any attachments and include a link to this post in the email.