You are lucky that even as a paid member you get this bugfix. Weirdest thing I ever read.

You are not entitled to any support for the Software under this Agreement. All support must be purchased separately and will be subject to the terms and conditions contained in the Sencha support agreement. You are entitled to receive minor version updates to the Software (i.e. versions identified as follows (X.Y, X.Y+1). You are not entitled to receive major version updates (i.e. X.Y, X+1.Y) or bug fix updates to the Software (X.Y.Z, X.Y.Z+1), unless purchased independently of this license.
From here: