Form Block: Only the first form works if multiple forms have page breaks in between

[supernovia]

Impacted plugin

Jetpack

Quick summary

If a page has more than one form with page-breaks in between, only the first form works. Subsequent forms will only send (if anything) a blank copy of the first form.

Steps to reproduce

1. Start with a Simple any site on WP.com
2. Create a page and add two forms, preferably with different fields so the issue is more obvious, and don't make fields required
3. Add a page-break between them, then publish and view the page
4. Fill out and submit each form, then look at the email / feedbacks
5. Notice the email/feedback for the second form is blank. If first form has required fields, it may not go through at all.

Editor View

(I had to make these not required, or it wouldn't go through at all)

Filling in the second form

Feedback shows as a blank copy of the first form

Site owner impact

Fewer than 20% of the total website/platform users

Severity

Moderate

What other impact(s) does this issue have?

No revenue impact

If a workaround is available, please outline it here.

It works fine without page breaks.

Also, for now, it works fine on Atomic.

Platform (Simple and/or Atomic)

Simple

[supernovia]

This one is an edge case, but it affects a user who has had their site set up this way for some time. They have several paginated lessons with multiple forms on them, and everything but the first forms stopped working on January 19, 2025.

9320328-zd-a8c

[github-actions]

Support References

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

• 9320328-zen

[simison]

I was expecting #40998 to fix this, cc @Automattic/zap

Edit: nope, I read wrongly, was thinking "more" block but this is about "page break" block instead.

[supernovia]

Update, @simison for what it's worth, this worked fine on Atomic yesterday, but today it stopped working. So I'm guessing it's a recent change.

[enejb]

I did an investigation here and I think the only reason why this worked is because the form was the same across the pages.
With introduction of #40998 the problem was is more predominant because the form now has different ids.

#41407 should fix this by making sure that the support is added as expected.

[edanzer]

I think the only reason why this worked is because the form was the same across the pages

Yes, this tripped me up. I thought I couldn't duplicate. But if forms have the same fields, submissions appears to work fine. As noted in the original issue description too, you really need forms with different fields to see the issue.