Craft Bug - Charm upgrade button is sometimes not disabled properly

[qwaszx167943]

Sometimes, after upgrading a charm, its button will not get greyed out with insufficient accumulated mojo. I don't have precise steps to recreate, but my impression is that it happens when the price is slightly less than half of stored mojo. That is, the price of an upgrade is X, the price after an upgrade is X+Y, and stored mojo is between 2*X and 2*X+Y. (If mojo is less than 2*X, the button greys seems to out correctly; if mojo is greater than 2*X+Y, the button is correctly still active).

(See Luxuous Relaxing Couch on the image.)

Edited July 9, 2019 by qwaszx167943
changed title to less ambiguous / more precise