Before this commit: When we create a nested list and change a tag of the one of the list item in nested list and press backspace from start it removes the tag. After this commit: Now pressing backspace from the start tag, the tag is not removed. task - 3147461 closes odoo/odoo#118353 X-original-commit: 7504dc1adc50916b9a408c3307832ab45ed5174b Signed-off-by: David Monjoie (dmo) <dmo@odoo.com>