If we launch Ensemble8 on latest metal branch code. It crashes at MetalShader.setFloat2() with following log :

>>> MTLShader.setConstant() : fragmentFunctionName : FillRoundRect_Color
    MTLShader.setConstant() name = oinvarcradii, f0 = 0.083333336, f1 = 0.083333336
2023-03-09 14:23:05.380 java[8931:260143]
2023-03-09 14:23:05.380 java[8931:260143] -> JNICALL Native: MTLShader_nSetFloat2
2023-03-09 14:23:05.380 java[8931:260143]
2023-03-09 14:23:05.380 java[8931:260143] >>>> MetalShader.setFloat2() : argumentName = oinvarcradii, f0= 0.083333, f1= 0.083333
2023-03-09 14:23:05.380 java[8931:260143] MetalShader.setFloat2()----> fragFuncName: FillRoundRect_Color
2023-03-09 14:23:05.380 java[8931:260143] Value: 0 for key: oinvarcradii
2023-03-09 14:23:05.380 java[8931:260143] index.intValue: 0

And this crash is seen only when we use setFloat2() with other set of arguments it is working fine.