Permissions weird behavior

Hi,

Thank you guys for the incredible product!.

We use Metabase in our daily basic but we notice a weird behavior regarding permissions and groups. Some users cannot see the collections that they have assigned, they receive the error “Sorry you don’t have permissions to see this collection” although they have correctly configured the group and the group is valid assigned with reading permission over the collection. Do you guys have any related or known issue similar to this problem?

We are using Metabase version 0.29.3 on chrome version 67.0.3396.99.
Our Metabase database was configured for MySQL and right now it’s running on an instance of Amazon Aurora RDS.

Thank you in advance!