newly broken charting

Normal behavior Here's a very simple spreadsheet with a chart: broken.gnumeric

When I open it with a bog-standard distribution version of gnumeric, I get the normal expected desired result:

So far so good.

Observed bug When I open the same file with a version compiled from freshly-pulled git sources, I observe a badly broken chart:

Additional factoid: If I select the broken chart and then copy-and-paste (ctrl-C ctrl-V) then I get a new chart that looks pretty much as expected. So evidently all the chart information is still there.

Similarly: If click on the broken chart to get the "properties" popup, make no changes, and click "apply", that changes the chart appearance so it looks OK.

This is 100% reproducible chez moi.

Platform

:; /usr/src/gnome/gnumeric/src/gnumeric --version gnumeric version '1.12.47' datadir := '/usr/src/gnome/install/share/gnumeric/1.12.47' libdir := '/usr/src/gnome/gnumeric'

:; uname -srmo Linux 4.19.42+ x86_64 GNU/Linux

:; lsb_release -a LSB Version: core-9.20170808ubuntu1-noarch:cxx-3.0-amd64:cxx-3.0-noarch:cxx-3.1-amd64:cxx-3.1-noarch:cxx-3.2-amd64:cxx-3.2-noarch:cxx-4.0-amd64:cxx-4.0-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-3.1-amd64:desktop-3.1-noarch:desktop-3.2-amd64:desktop-3.2-noarch:desktop-4.0-amd64:desktop-4.0-noarch:desktop-4.1-amd64:desktop-4.1-noarch:graphics-2.0-amd64:graphics-2.0-noarch:graphics-3.0-amd64:graphics-3.0-noarch:graphics-3.1-amd64:graphics-3.1-noarch:graphics-3.2-amd64:graphics-3.2-noarch:graphics-4.0-amd64:graphics-4.0-noarch:graphics-4.1-amd64:graphics-4.1-noarch:multimedia-3.2-amd64:multimedia-3.2-noarch:multimedia-4.0-amd64:multimedia-4.0-noarch:multimedia-4.1-amd64:multimedia-4.1-noarch:printing-9.20170808ubuntu1-noarch:qt4-3.1-amd64:qt4-3.1-noarch:security-9.20170808ubuntu1-noarch Distributor ID: Ubuntu Description: Ubuntu 18.04.4 LTS Release: 18.04 Codename: bionic