Setting "FormElementHtmlIdPrefix" breaks conditional logic between multiple pages

[karltynan]

If you set a FormElementHtmlIdPrefix value in appsettings ("FormElementHtmlIdPrefix": "field_", for example), conditional logic works as expected for fields on the same page, but breaks for fields between multiple pages.

Specifics

Version: Umbraco Forms 10.5.2

Steps to reproduce

1. Add a value for FormElementHtmlIdPrefix in appsettings (e.g. "field_")
2. Create a form with two pages that has conditional logic between multiple pages:
   a. Add a checkbox on page one
   b. Add a textbox on page two
   c. Set the textbox to show only if the checkbox is true
3. Add the form to a page
4. Try the form on the website

Expected result

Based on the example above, checking the checkbox on page 1 should show or hide the textbox on page 2 accordingly.

Actual result

The textbox on page 2 is always hidden.

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This item has been added to our backlog AB#36202

[AndyButland]

Thanks for reporting this @karltynan. We have a fix, and will make available in the next round of patch releases.