Anti-Aliasing on Render-To-Texture may yield "Internal Error" on iOS

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Problem Description

When using anti-aliasing via the "context3D.setRenderToTexture()" method, subsequent calls to "context.createVertexBuffer" yield the error "Error #3672: Buffer creation failed. Internal error." on iOS.

This makes it impossible to use the new FragmentFilter.antiAliasing property introduced in Starling 2.2 on iOS.

This was reproduced in AIR 26, Build 112, and AIR 25, Build 134.
I run the app on iOS 10.3.2.

Adobe Tracker Issue: https://tracker.adobe.com/#/view/AIR-4198370

Steps to Reproduce

Use the following class as a Starling Root-Class (Starling 2.2) on iOS:
https://gist.github.com/anonymous/1c1480962f0723f9baaa63e7c8f51683

The code causes an exception in this line in FragmentFilter.as (effect.uploadVertexData). If you step into this method, you see that the actual exception occurs inside context.createVertexBuffer.

Known Workarounds

Set filter.resolution = 2 instead of filter.antiAliasing = 2.

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Fixed with AIR 27.0.0.128!