Indexing all of ~/Library on macOS

After JetBrains Toolbox updated IntelliJ to 2018.3.3 on macOS

IntelliJ IDEA 2018.3.3 (Community Edition)
Build #IC-183.5153.38, built on January 9, 2019
JRE: 1.8.0_152-release-1343-b26 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
macOS 10.14.2

IntelliJ initially asked for permissions to access my Calendar and my Contacts (This is referenced in a couple other threads involving WebStore, PHPStorm, and IntelliJ), and then has proceeded to index for hours, literally indexing everything in ~/Library including its own caches, but also including Application Support for every application on my system (which obviously doesn't make sense).

All of my projects are in ~/projects, though none of my projects' locations have changed since 2018.3.2. I haven't altered any settings or otherwise reconfigured anything that I think would justify the massive re-indexing. 

Trying to recover from this issue, I've invalidated caches and restarted, but it continues to index. I also uninstalled and re-installed (Via JetBrains Toolbox), but when I started again, it's back to indexing.