Hi, yes, it is already known, see here: [https://developer.apple.com/forums/thread/793582) no permanent fix for this is available (yet). For some workaround see the link above.

Hi Thanks for submitting the FB. Confirm here. Some kind of workaround fixed that for me: Via Project-Navigator select a source file and via the option-command-2-inspector-pane enable 'show history inspector'-pane. Once you see the commit info for this specific file, you can switch with command-2 to the source control navigator. Now every commit in the repo-history should be shown as before. This procedure did the trick for me. Up to now looks quite persistent (after quitting Xcode, reboot, relogin, etc.) everything is fine. update playing around with enabling code-review in editor seems also work and switching on the repo-commit-history list. have to correct: not really persistent fix. looks like it disappeared again. Oh, what a mess with Xcode B3. (Hope you) Have fun!

Craig, it's you?

Hi, @Nickkk might be, that you are affected of a 16.3* Bug. see here: [https://developer.apple.com/forums/thread/777010) recommend to upgrade to 16.4 anyway because .3 has too many bugs. good luck and have fun!

Hi @InstantInteractive as per May 15, the Xcode RC for 16.4 (16F6) --> WITH latest *.5 Releases is available for download: (this release is offering all relevant final version *.5 SDKs giving full platform support) [https://developer.apple.com/download/applications/) have fun! Cheers, /B

Fixed (as least to my config/situation). Note: Reverting the workaround: defaults write com.apple.dt.Xcode IDEDocumentationSpotlightIndexDisable -bool NO **Version 16.4 beta (16F1t) // 28 April 2025 ** Xcode now behaves as it should. The 'Developer Documentation' window can be called, a re-indexing takes place (indexing takes a few minutes, during this time Xcode consumes a few CPU cycles, but so far everything is acceptable). The indexing process is completed and a new directory has been created. /Users/username/Library/Developer/Xcode/DocumentationCache/v279 So far I have not detected any side effects or other errors. So far so good.

ah...fixed! :-} with latest Xcode (28 April 2025) Version 16.4 beta (16F1t) The size of the preview pane is kept between editor/file changes and is not reset to a default value.

hi, for ‘references’ topic see here: [https://developer.apple.com/forums/thread/782153?answerId=836739022#836739022) for expected size reduction: most size (and complexity reduction) comes from using folders instead of groups. see here for further information: [https://developer.apple.com/documentation/xcode/managing-files-and-folders-in-your-xcode-project#Convert-groups-to-folders)

+1 I can also confirm the malfunction here. That annoys me too. It seems that 16.3 is not really a good value (so many issues).

hi, issue is known, since beta3. [https://developer.apple.com/forums/thread/777010) reported to apple via https://feedbackassistant.apple.com/feedback/16926964 and also already acknowledged in release notes for 16.3 [https://developer.apple.com/documentation/xcode-release-notes/xcode-16_3-release-notes#Developer-Documentation-Window) workaround for mitigation is: defaults write com.apple.dt.Xcode IDEDocumentationSpotlightIndexDisable -bool YES

Here with Xcode 16.3 all fine. Do you still have issues with latest Xcode version (Version 16.3 (16E140))?

oh...at least the issue was recognized. interim solution from Apple's point of view. I am running 16.3 RC Xcode. Furthermore I copied the index from 16.3Beta2 (so I have a complete 16.3 Doc-Index, with UIKit and can work without burning CPU). No problems so far. But there will hopefully be another fix so that the error is finally corrected in 16.3.x.

Installed Xcode 16.3 RC (Version 16.3 (16E137)) fixed: UIKit is showing up in Documentation. This is fixed. Thanks. :-( BUT NOT FIXED - Issue with high CPU consumption >80% Xcode Process, Indexing stucked. with Version 16.3 (16E137) the Index Directory name has changed to v278, but unfortunately same issues as with previous beta 3 (277). Starting indexing, but after some minutes it looks like stuck and the size-increase of the directories is halting. Normally (expecting from v275 16.2 is about 534MB); in 16.3 RC + Beta3 it is stopping around 61MB. Xcode Process is continuing running with about 80% CPU consumption! Feedback FB16926964 is updated.

Hi @mattn at least UIKit is now showing up with latest Xcode 16.3 RC. (24 Mar - (16E137)). Have fun.

little bit late to the party… …but did you already tried to clean build folder? remove derived app build data folder contents?