Dropping a component in a global region does not update the preview

I've just done a fresh install on 0.x after merging in the global region work and I'm no longer seeing the issue.

I'm still working in this area. Will update this issue if I come across the issue again or have better steps to reproduce.

I noticed this can happen page template config is invalid for one reason or another. This can be reproduced by trying to delete page title block. It was pretty confusing so we should keep this open.

WRT PageTemplate validation

📌 Page title should not be required Active landed, so #3 cannot happen anymore.

#3501600-17: Split 1 PageTemplate config entity into N PageRegion config entities → describes how we'll be able to drop most validation, probably all the validation that caused #3 in the first place.

So let's wait for 📌 Consider refactoring page_template into page_region(s) Active to land, and then re-assess this.

Related, at a different level

This is level up from 📌 Improve server-side error handling Active , but is comparable in intent. A "level up" in the sense that that is about individual component instances, and this is about a tree of component instances.

So let's wait for 📌 Improve server-side error handling Active to land too, and then re-assess this.

The blocking issues have landed now.

Tangentially related 🐛 ApiLayoutController::buildPreviewRenderable() always auto-saves regions regardless of $updateAutoSave value Active landed earlier today.

@mayur-sose, could you please check if this is still reproducible? 🙏

@wim-leers, I attempted to reproduce the issue, but was unable to do so. Here are the steps I followed:

1. Added the Page Title component to the canvas.
2. Deleted the Page Title block.
3. Added the Hero component to the canvas.
4. Refreshed the page and confirmed that the Hero component appeared correctly in both the Layers panel and the preview.

I also tried several other scenarios to replicate the issue, but it did not occur in any of them.

🥳 Thanks, @mayur-sose! Crediting you for that :)