Weird physics behaviour

Hello everyone,

I have a weird physics simulation in UE4 just by making roll a ball on a table inclined by 6.5° and a hole made with a cylinder brush in substrative mode. When there is no hole on the table, the ball rolls to the bottom straight right but when there is a hole, the ball is attracted by it (cf. the GIF).

Does anyone experienced this? Do you know what causes this and how to fix it?