Thursday, February 5, 2026

Tahoe SwiftUI Table Bugs

Todd Heberlein:

The first bug report, FB21850924, covers a terrible memory leak in SwiftUI’s Table view, a feature our program uses a lot. […] Despite the rapid updates to the data, the sample program only keeps 1000 records in a deque, so the memory usage should bounded. Strangely, switching to another view triggers Swift to reclaim much of the memory.

[…]

The second bug report, FB21860141, covers SwiftUI Table view’s performance degrading quickly. […] Like the memory issue, simply switching to another view or, in this case, (strangely again) even just changing the window size resolves the problem.

Previously:

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