Steps to reproduce ================== - Install mrp_product_expiry - Go to Inventory > Products > Lots/Serial Numbers - Add the column "Expiration date" - Remove the groupby if any - Select 2 records, set an expiration date - Confirm - Select the same records, remove the expiration date -> TypeError: value.setZone is not a function Cause of the issue ================== When entering the readonly mode after changing the date, the function `formattedValue` is called. But `this.props.value` is equal to `""`. `formatDateTime` only handles `DateTime | false` The field is rendered from this template https://github.com/odoo/odoo/blob/1d8f6359bbf55983a9582282d12a187c67cdf509/addons/web/static/src/views/list/list_renderer.xml#L233-L236 When `canUseFormatter` returns true, formatDateTime is called with false, coming from `record.data[fieldName]` opw-3111869 closes odoo/odoo#109436 X-original-commit: 5b26a080ae28fab2a78e92a838472578591eef17 Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>