This specific patch addressed several critical stability issues that had affected early 10.1 users:
: Resolved numerous issues where the application would quit unexpectedly, such as when resizing movie windows in full-screen mode, using the EXS editor, or inserting notes in the Step Editor. Apple Logic Pro X 10.1.1
: Fixed an issue where pre-fader sends were incorrectly affected by VCA faders. Audio Perception Apple - Logic Pro 10
: The Brush Tool no longer gets stuck in fixed pitch mode after switching from the Pencil Tool. Additionally, undo reliability was restored after moving events within the Piano Roll . using the EXS editor
Because 10.1.1 is a point-update, it inherits the powerful "beat-making" toolset of version 10.1: Logic Pro X 10.1.1 Release Notes - Audio Perception Apr 30 2015 Posted in Apple Logic. User Rating: / 0. Audio Perception Apple - Logic Pro 10.1 · Tech Review RA - Resident Advisor
Apple released on February 24, 2015, as a minor maintenance update to the significant 10.1 version launched earlier that year. While it primarily focused on stability and bug fixes, it solidified the major "electronic and hip-hop" focused features introduced in 10.1, making it a critical version for producers using older macOS environments. Key Features and Fixes in 10.1.1