Description

After adding a couple of hundred files (importing assets), the changes just stop showing up completely (also the previously shown changed files are now gone from the "Changes" tab).

This is logged if I add a new empty script:

180827-15:20:48.937 TRACE [ 1] <GitLocksCache>                     needsInvalidation isInitialized:True timedOut:True
180827-15:20:48.938 TRACE [181] <ProcessWrapper>                    Running '/usr/bin/git -c i18n.logoutputencoding=utf8 -c core.quotepath=false status -b -u --porcelain'
180827-15:20:48.948 TRACE [182] <ProcessWrapper>                    Running '/usr/local/bin/git-lfs locks --json'

Steps to Reproduce

1. Open a new project
2. Install GitHub plugin
3. Publish repo
4. Import hundreds of asset files
5. "Changes" tab starts showing changed files
6. Import more files
7. "Changes" tab suddenly stops showing any changes at all (also older changed files are gone)

Expected behavior: Show all changed files.

Actual behavior: Shows 0 changed files.

Reproduces how often: 100%