<s:select> with computed "name" no longer working

During our upgrade to version 2.3.29, we noticed that a specific scenario with the <s:select> tag stopped working. We've reverted back to 2.3.28.1 in the interim until this is fixed.

Our code creates a select list using a tag that looks like this:

<s:select list="#field.selections" name="docBuilder.fieldValue['%{#field.id}']" ...

In 2.3.29, the expression for field.id is not being made prior to the call to the fieldValue method on the docBuilder object. As indicated, this works correctly in 2.3.28.1