Describe the bug

related to #7426 . Just reporting cause maybe 4 years later IT may be solved.

Visual bug when using the responsivePriority attribute in a <p:dataTable> in combination with RowExpansion, when the screen is small or resized (columns are hidden).

1. Create a <p:dataTable> with 5 or more columns.

2. Set responsivePriority="1" on two columns and responsivePriority="2" on the others.

3. Enable rowExpansion using <p:rowExpansion> and <p:rowToggler>.

4. Reduce the screen width until the columns with responsivePriority="2" are hidden (as expected).

5. Click to expand a row using the row toggler.

The hidden columns (those with responsivePriority="2") unexpectedly reappear, but they are shown empty.

Reproducer

primefaces-test.zip

Expected behavior

Only the visible columns should remain, and the expanded row content should display normally without affecting the responsive layout

PrimeFaces edition

Community

PrimeFaces version

15.0.4

Theme

all

JSF implementation

Mojarra

JSF version

2.3

Java version

17

Browser(s)

all