first we developed most modifications with one odoo-user.
we use german language.
now we switched to another Odoo-Testuser and this user gets some labels with the wrong labelname.
Example:
<record model="ir.ui.view" id="sale_order_line_extended_2_form_view">
<field name="name">sale.extended_2_sale_order_line</field>
<field name="model">sale.order</field>
<field name="inherit_id" ref="sale.view_order_form" />
<field name="arch" type="xml">
<xpath expr="//field[@name='order_line']" position="inside">
<tree string="Sales Order Lines" decoration-danger="product_id==False"
decoration-info="invoice_status=='to invoice'" decoration-muted="is_set_line==True"
delete="false">
...
...
..
<field name="product_uom_qty" string="Menge"
context="{'partner_id':parent.partner_id, 'quantity':product_uom_qty, 'pricelist':parent.pricelist_id, 'uom':product_uom, 'company_id': parent.company_id}" />
...
...
our Developement User sees the LAbel "Menge" for product_uom_qty, but our testuser now sees the ORiginal Label name for this field in FrontEnd
Is both users are using same language ? As both users see different labels, the possible reason is the user language as you havent used and group concepts