Another Unity 5.3 patch was released today.
From the release notes:
Fixes
- (750357) - iOS: Added font containing Lao characters to the fallback list.
- (none) - iOS: Don't enable bitcode by default for Mono.
- (none) - OpenGL core: Fixed a crash with AMD and NVIDIA on Windows when using RenderTexture with recent drivers.
- (none) - OpenGL core: Fixed a crash with Intel GPUs on Linux.
- (none) - OpenGL core: Fixed text rendering with AMD GPUs on OSX 10.9.
- (756734), (756754) - OpenGL ES: Fixed crashes with new Samsung firware.
- (752821) - [treeview] Make right and left arrow select next/previous parent for fast expand/collapse.
- (758120) - WebGL: Fixed a crash when setting Application.runInBackground, if Strip Engine Code is enabled.