Before this commit, the ´.ace_gutter´ overlapped the beginning of the ace widget text content. It only happens in read-only mode if it's a one-liner content. Note that ´aria-hidden´ attribute is not set on BS modal. So, it seems useless to remove it. Maybe a relicate of Bootstrap 3. Steps to reproduce: In debug mode, - Open Settings - Technical - Scheduled Actions - Open any closes odoo/odoo#109519 X-original-commit: dc65d3de3a02a8f196eb22348bdfe41ede23f5d1 Signed-off-by: Romeo Fragomeli (rfr) <rfr@odoo.com> Signed-off-by: Adrien Dieudonné (adr) <adr@odoo.com>