Inconsistent behaviour of extrapolation Fit/Fix radio buttons in Invariant Perspective

[smk78]

If you Enable High-Q extrapolation, select Fix, enter a Power, and then click Calculate, an extrapolation is generated, but the radio button jumps back to Fit.

This does not happen in 4.x and could catch out the unwary?

[butlerpd]

Note this may be the same code (or part of the same code) causing the problem in #1604 which does the same thing if you choose power law instead of Guinier -- though in that case the power law is not calculated but the radio button jumps back to power law.