5.4-ga-1 - problem when *add* a column to a *grid*, but it is working OK in 5.4-beta-26

[Vangel V. Ajanovski]

When adding a new column to a grid like this:

        <t:grid t:source="degrees" t:row="degree" t:add="delete">
            <p:deleteCell>
                    delete
            </p:deleteCell>
        </t:grid>

I am getting an
org.apache.tapestry5.ioc.internal.OperationException


The error occurs on 5.4-rc-1, but not on 5.4-beta-26.


Java:
openjdk version "1.8.0_66"
OpenJDK Runtime Environment (build 1.8.0_66-b17)
OpenJDK 64-Bit Server VM (build 25.66-b17, mixed mode)

Source where problem occurs:
https://develop.finki.ukim.mk/projects/isis/browser/trunk/src/main/resources/mk/ukim/finki/isis/dossier/pages/admin/DegreeList.tml
https://develop.finki.ukim.mk/projects/isis/browser/trunk/src/main/java/mk/ukim/finki/isis/dossier/pages/admin/DegreeList.java

Project pom.xml:
https://develop.finki.ukim.mk/projects/isis/browser/trunk/pom.xml

Render queue error in CleanupRender[admin/DegreeList:grid]: Bean editor model for mk.ukim.finki.isis.dossier.entities.Degree already contains a property model for property 'delete'. The same piece of code has been working without such a problem with previous versions for the last 3 years at least.

smime.p7s
Description: S/MIME Cryptographic Signature