Upgrading Erlang to 20.1 makes Wings crash when creating a cube

[yschaeff]

Same problem on Debian unstable. Had to do the following downgrade to get wings going again.

Will install 9 packages, and remove 1 packages.
1744 kB of disk space will be used
========================================
[REMOVE, NOT USED] erlang-crypto:amd64 1:20.1.4+dfsg-1
[DOWNGRADE] erlang-base:amd64 1:20.1.4+dfsg-1 -> 1:19.2.1+dfsg-2
[DOWNGRADE] erlang-dialyzer:amd64 1:20.1.4+dfsg-1 -> 1:19.2.1+dfsg-2
[DOWNGRADE] erlang-mnesia:amd64 1:20.1.4+dfsg-1 -> 1:19.2.1+dfsg-2
[DOWNGRADE] erlang-runtime-tools:amd64 1:20.1.4+dfsg-1 -> 1:19.2.1+dfsg-2
[DOWNGRADE] erlang-syntax-tools:amd64 1:20.1.4+dfsg-1 -> 1:19.2.1+dfsg-2
[DOWNGRADE] erlang-tools:amd64 1:20.1.4+dfsg-1 -> 1:19.2.1+dfsg-2
[DOWNGRADE] erlang-wx:amd64 1:20.1.4+dfsg-1 -> 1:19.2.1+dfsg-2
[DOWNGRADE] erlang-xmerl:amd64 1:20.1.4+dfsg-1 -> 1:19.2.1+dfsg-2
[DOWNGRADE] wings3d:amd64 2.1.5-2 -> 2.1.5-1
========================================

edit: reported Debian package bug: https://bugs.debian.org/cgi-bin/bugrepor...bug=881156