Memory increases when repeatedly switching between two folders with thumbnailed files.
Steps to reproduce
Using nautilus 188.8.131.52, nautilus memory usage grows very large when switching between two folders on each with many thumbnailed documents. Every time time I switch between folderA and folderB, it grows in memory. FolderA is the Pictures folder and FolderB is the Documents folder. Even pressing F5 repeatedly in Documents folder triggers this.
Only consume more memory once per folder unless the files themselves were updated.