[Templates] Page using Custom Template previews with default template on Atomic sites

[ricklabsdotn8]

Quick summary

Loading a custom template to a page does not load the appropriate preview.

Steps to reproduce

Create a custom page/post template

1. Create a custom page/post template under Appearance → Editor → Templates
2. Click on Add Template (plus button)
3. Select Custom Template
4. Style the Custom Template accordingly

Apply the page/post template

1. Create a post/page
2. On the page/post settings, change the template to the custom template

What you expected to happen

The page/post should be updated to preview the custom template

What actually happened

Nothing happens, and the template can only be previewed on the frontend. Reloading the page does not help.

Impact

One

Available workarounds?

No and the platform is unusable

Platform (Simple and/or Atomic)

No response

Logs or notes

6832681-zen

Current workaround

[github-actions[bot]]

Support References

This comment is automatically generated. Please do not edit it.

• [ ] 6832681-zen

[cuemarie]

📌 REPRODUCTION RESULTS

• Tested on Simple – Replicated

📌 FINDINGS/SCREENSHOTS/VIDEO Quick triaged on Simple for now, and I am able to replicate. Previewing doesn't show the custom template, but publish/update does apply the correct template.

https://github.com/Automattic/wp-calypso/assets/27249804/35d5d933-defc-49c5-9043-5fab33d210f6

📌 ACTIONS

• Lowering priority to Normal
• Moving to In Triage for now - will return and test outside of Dotcom and Atomic as well.

[cuemarie]

📌 REPRODUCTION RESULTS

• Tested on Simple – Could Not Replicate
• Tested on Atomic – Replicated
• Replicable outside of Dotcom – No

📌 FINDINGS/SCREENSHOTS/VIDEO I can replicate this only on an Atomic site within WordPress.com.

Atomic

https://github.com/Automattic/wp-calypso/assets/27249804/19237d49-9e1f-4918-bab2-3f2a08f5970c

Simple

https://github.com/Automattic/wp-calypso/assets/27249804/91673548-023e-4a45-946e-1a3a60c01ca3

Self-Hosted tested with GB 16.6.0 and 16.7.0 - both work as expected.

https://github.com/Automattic/wp-calypso/assets/27249804/beb84408-baf7-474c-8e16-1b6563b98f9b

📌 ACTIONS

• Triage complete

[annezazu]

Noting that this matches this issue in Gutenberg: https://github.com/WordPress/gutenberg/issues/28208

[davemart-in]

Closing this out as a duplicate of https://github.com/WordPress/gutenberg/issues/28208