[FIX] product: currency computation depends on the product company_id.

addons/product/models/product_template.py

@@ -176,6 +176,7 @@ class ProductTemplate(models.Model):
         for p in self:
             p.product_variant_id = p.product_variant_ids[:1].id
 
+    @api.depends('company_id')
     def _compute_currency_id(self):
         main_company = self.env['res.company']._get_main_company()
         for template in self: