https://krytsal-whitespace.tiddlyhost.com/
See this demo wiki with both Krystal and whitespace plug ins.
If I click on the the 3 line menu button in the right top corner, the sidebar will remain open and fixed. But I notice one issue - something is overlapping the tiddlers opened in the story river except the first tiddler, extending from the region of the sidebar.
Any solutions for this?