Just the other day BlackBerry rolled out an update for BBM for BlackBerry, iOS and Android. This update caused some issues for some people, This update resolves those issues people were having with the application.
This update takes the version to 10.9.5.20 and is available in BlackBerry World for all to download. Please not that this update may reset BBM groups. With that being said 99% of the time BBM Groups usually restore if you let the update settle in a bit.