those plugins :

• tiles (animation enabled )

1) have problem in course index when we click on a subsection.

2)showing tips by hovering over the section it count the subsection and d'ont consider the activities inside subsection and the progress is not accurate to the number of activities.

• checklist plugin

treat subsection as activities and show the checkboxes for theme while hiding activities inside them whick is problematic.... 

• i'm sure other course formats and others plugin have stopper problem with subsection while they said that the addon compatible with moodle 4.5