On an Odoo report (i.e. this quotation) the following unpleasant misprint can happen : 

If your client has Studio, you can resize the column and extend it to avoid this line crossing.

1. Select the block that you need to resize

2. On the right menu, change the class of the block. The column are by default set to auto : col-auto. In order to adapt the size of the block, change the number of the column. In this case, a 3 worked fine : col-3.