Hello Apple Developer, we recently found that on some devices of IOS 13, there is a [UITableView _updateVisibleCellsNow:] Crash recursive call, the following is the stackThread 1 Queue : com.apple.main-thread (serial)#0 0x00000001a1bb02fc in lookUpImpOrForward () #1 0x00000001a1ba1110 in object_getMethodImplementation () #2 0x00000001a16a2084 in _NSIsNSString () #3 0x00000001a1581f04 in -[NSTaggedPointerString isEqual:] () #4 0x00000001a1615850 in CFEqual () #5 0x00000001a16b407c in CFBasicHashFindBucket () #6 0x00000001a15dd19c in CFDictionaryGetValue () #7 0x00000001a974071c in -[UIView(Rendering) contentMode] () #8 0x00000001a8fada64 in -[_UIImageContentLayout initWithSource:target:] () #9 0x00000001a8fad7b4 in +[_UIImageContentLayout layoutForSource:inTarget:] () #10 0x00000001a97013bc in -[UIImageView _layoutForImage:] () #11 0x00000001a9701fe4 in -[UIImageView _setImageViewContents:] () #12 0x00000001a9702f38 in -[UIImageView _updateState] () #13 0x00000001a9704830 in -[UIImageView _setViewGeometry:forMetric:] () #14 0x00000001a96e18f0 in -[UIScrollView _layoutVerticalScrollIndicatorWithBounds:effectiveInset:contentOffset:fraction:additionalInset:cornerAdjust:showing:recalcSize:] () #15 0x00000001a96e129c in -[UIScrollView _adjustScrollerIndicators:alwaysShowingThem:] () #16 0x00000001a96cfc84 in -[UIScrollView setContentOffset:] () #17 0x00000001a94a0e2c in -[UITableView setContentOffset:] () #18 0x00000001a96ec9f8 in -[UIScrollView _adjustContentOffsetIfNecessary] () #19 0x00000001a9492688 in -[UITableView _restoreOrAdjustContentOffsetWithRowCount:initialContentInsetTop:] () #20 0x00000001a9481e64 in -[UITableView _updateVisibleCellsNow:] () #21 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #22 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #23 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #24 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #25 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #26 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #27 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #28 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #29 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #30 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #31 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #32 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #33 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #34 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #35 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #36 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #37 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #38 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #39 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #40 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #41 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #42 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #43 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #44 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () ............. #2185 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #2186 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #2187 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #2188 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #2189 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #2190 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #2191 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #2192 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #2193 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #2194 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #2195 0x00000001a9481e8c in -[UITableView _updateVisibleCellsNow:] () #2196 0x00000001a949e8d0 in -[UITableView layoutSubviews] () #2197 0x00000001a9752a94 in -[UIView(CALayerDelegate) layoutSublayersOfLayer:] () #2198 0x00000001a4059818 in -[CALayer layoutSublayers] () #2199 0x00000001a405e03c in CA::Layer::layout_if_needed(CA::Transaction*) () #2200 0x00000001a4069800 in CA::Layer::layout_and_display_if_needed(CA::Transaction*) () #2201 0x00000001a3fc0804 in CA::Context::commit_transaction(CA::Transaction*, double) () #2202 0x00000001a3fea680 in CA::Transaction::commit() () #2203 0x00000001a93026a8 in _afterCACommitHandler () #2204 0x00000001a1612b24 in __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ () #2205 0x00000001a160da24 in __CFRunLoopDoObservers () #2206 0x00000001a160dff0 in __CFRunLoopRun () #2207 0x00000001a160d7ac in CFRunLoopRunSpecific () #2208 0x00000001a080f180 in GSEventRunModal () #2209 0x00000001a92da244 in UIApplicationMain ()This Crash has some strange phenomena:1. Appears only on some devices: I have a lot of devices, this Crash only appears on the iPhone 6Plus2. If you interrupt the debugging during the debugging process, there is a certain probability that Crash does not appear, unless you delete the app and rebuild it, you can continue to reproduce Crash3. It seems that the problem is in the layoutSubView: method of the UITableViewIn addition, I noticed that iOS 13 seems to have modified the implementation of [UITableView layoutSubViews]. In iOS 12,it call[UITableView _updateVisibleCellsNow:isRecursive:]and in IOS 13,it Call[UITableView _updateVisibleCellsNow:]This problem has been bothering me for a long time, please give me some help.