The backend layout is optimized for Joomla 3.x. But I do my best to layout is compatible with Joomla 2.5. I will be fixed in the next version of IPrice minimart. Now you can fix it so:
1. Open the XML file of category edit form:
/administrator/components/com_ipricecalc/models/forms/category.xml
2. Insert the separator line:
<field name="spacer999" type="spacer" hr="true" />
before the "description" line (near the line 21):
<field name="description" type="editor" buttons="true" hide="pagebreak,readmore" filter="JComponentHelper::filterText" default="" label="Description" />
In the same manner, add the separator line before description line in other XML files (section.xml and other files where the problem is appear)