After encountering significant problems we've reluctantly decided to [[remove support|https://github.com/TiddlyWiki/TiddlyWiki5/commit/737e9ae4cb136ca3f473624f64142bd83e532b9b]] for multiple sub-operators with the [[is Operator]] that was added in v5.1.16.
* [[Improved|https://github.com/TiddlyWiki/TiddlyWiki5/commit/7468ad7acf1ca2280ad89ee014484928e160f54b]] appearance of ~TiddlyWiki's "red screen of embarrassment"
* [[Fixed|https://github.com/TiddlyWiki/TiddlyWiki5/commit/e6466b2c320cdab46a74aa343b6c56c5783e3f94]] problem with extraneous space in new journal titles
* [[Fixed|https://github.com/TiddlyWiki/TiddlyWiki5/commit/b95aa6ec6ad51672e9ed26ab94d7fe799698782c]] problem with repeated use of "new journal" with text set
* [[Fixed|https://github.com/TiddlyWiki/TiddlyWiki5/commit/f9be417204695d26d5f458fbc53870b2adb9a372]] (and [[here|https://github.com/TiddlyWiki/TiddlyWiki5/commit/46e8e4343acba876b9540b9fc77a5c85faa10939]]) problem with Etag handling
* [[Fixed|https://github.com/TiddlyWiki/TiddlyWiki5/pull/3240]] problem with [[is Operator]] introduced in 5.1.16
* [[Restored|https://github.com/TiddlyWiki/TiddlyWiki5/commit/b2173d11ea550ba4a5f2fd89b1388b392e37dd51]] default of the preview pane being hidden
* [[Fixed|https://github.com/TiddlyWiki/TiddlyWiki5/pull/3226]] animation timing problem with reveal widget that sometimes caused the sidebar not to show when requested
* [[Fixed|https://github.com/TiddlyWiki/TiddlyWiki5/pull/3244]] problem with saving with non-Dat URI schemes
* [[Fixed|https://github.com/TiddlyWiki/TiddlyWiki5/commit/4c89bbabbe5f5665e92258b560ed7380ae06d9e8]] deletion of `$:/status/UserName` when logged out
* [[Stopped|https://github.com/TiddlyWiki/TiddlyWiki5/pull/2893]] clearing [[$:/status/UserName]] when logged out
* [[Fixed|https://github.com/TiddlyWiki/TiddlyWiki5/commit/ab5e5795e88892b5687885c8ead8d6959082399b]] bug with attempting to lazy load tiddlers that do not qualify for syncing
* [[Added|https://github.com/TiddlyWiki/TiddlyWiki5/commit/2c7f467514cb75aefa87912620575deabde1a530]] support for `/*\` style metadata comments at the top of `*.CSS` files
[[@Jermolene|https://github.com/Jermolene]] would like to thank the contributors to this release who have generously given their time to help improve TiddlyWiki:
