Do not remove block in _removeNextEmptyUnbreakable. Before this commit, when you tried to remove insert a character in a td, with an empty td after the first one. The function _removeNextEmptyUnbreakable removed the empty td. It was for example breaking snippet in the website and mass_mailing. closes odoo/odoo#32096 Signed-off-by: Adrien Dieudonné (adr) <adr@odoo.com>