Bugfix
If you swap component parameters in a layout XML into a separate include, the layout XML cannot be parsed. The error message reads:
No attribute 'definition-file' expected for plain property '...' at ...
For example, you have the following situation
my.layout.xml
<component class="..."> <include name="withToolbar.xml"/> </component>
withToolbar.xml
<buttonbar>true</buttonbar> <toolbar>true</toolbar>
Test
Load layout with above situation.