Assume the context is gl, and two shader programs are A and B. the flow is as blow,
gl.useProgram(A);
locA = gl.getAttribLocation(A, 'A_attribute')
...
gl.vertexAttribDivisor(locA, 3);
gl.drawArraysIntanced();
...
gl.useProgram(B);
locB = gl.getAttribLocation(B, 'B_attribute');
...
gl.drawArrays();
....

If the driver distributes the same value to locA and locB, the disivor value of B_attribute is not zero, it is 3, the vaule as A_attribute. So will report error that
"attempt to draw with all attributes having non-zero divisors"
But B_attribute is zero divisor in fact.
https://codereview.chromium.org/2124953002/