TL;DR
When you open the space map, the view should start at the same spot it was when you last closed it.

What?
Currently, each time you open the space map, the view is reset to the center, and the zoom level is reset. Instead, it should remember the previous position and zoom level, and ...

To repro:
Sync mods with the attached save (or just keep all non-built-in mods disabled, which also results in the same crash)
Disable the "planet hoppers" mod
Try to load the save

This will result in a crash:
Factorio crashed. Generating symbolized stacktrace, please wait ...
src/Util ...

To repro: create an upgrade planner that upgrades a normal item to a high-quality item. For instance, a normal tier 1 speed module to an uncommon tier 1 speed module. Then hover over the items in the upgrade planner to compare their stats. I'd expect that the uncommon one would display the stats for ...