For information : I have used wxwidgets 3.1.3 for approximately 1 month (downloaded via git, in beta state of course) without finding any problems in C::B itself or my own wxwidgets programs.
Of course, it's only a partial test, but for me, it's quite good. At least, the bug found in 3.1.2 is solved (the one concerning a # in the 1rst column of a new line).
gd_on