# haxe-ui
- b
bright-gpu-74537
07/02/2020, 1:18 PMsuper strange though, can you zip up your test project? ill take a peek in a bit - f
fast-rain-20339
07/02/2020, 1:19 PMAh well my test project still works 😐 - b
bright-gpu-74537
07/02/2020, 1:19 PMoh... - b
bright-gpu-74537
07/02/2020, 1:22 PMok, thats more interesting - b
bright-gpu-74537
07/02/2020, 1:22 PMthis is a listview? - f
fast-rain-20339
07/02/2020, 1:22 PMYep - b
bright-gpu-74537
07/02/2020, 1:23 PMvirtualized? - f
fast-rain-20339
07/02/2020, 1:23 PMWhat do you mean by that? - b
bright-gpu-74537
07/02/2020, 1:23 PMvirtual=true - f
fast-rain-20339
07/02/2020, 1:23 PMI don't think so? I haven't manually set it to be - b
bright-gpu-74537
07/02/2020, 1:23 PMright, then it wont be - b
bright-gpu-74537
07/02/2020, 1:24 PMvery strange, would be great if you could managed to break your test project - b
bright-gpu-74537
07/02/2020, 1:24 PMas im sure if i try ill get the same results (ie, that it will work) - f
fast-rain-20339
07/02/2020, 1:25 PMYep, I'll keep trying for a bit. The test case really is working fine though. Must be to do with the tangle of classes that surround the UI code interacts with. - b
bright-gpu-74537
07/02/2020, 1:25 PMyeah, but it having an effect on the validation system is the strangest part - b
bright-gpu-74537
07/02/2020, 1:26 PMas you say, it sounds to be all not ui related in that callback - f
fast-rain-20339
07/02/2020, 1:26 PMOne difference I just realised with my code vs the test case is my code has a component nested inside another, whereas the testcase is just one component - f
fast-rain-20339
07/02/2020, 1:45 PMoh my gosh I've got it 😄 🥳 I'm an actual idiot, sorry for wasting your time and flooding chat. - f
fast-rain-20339
07/02/2020, 1:46 PMChrome showed that there were two errors. I missed the first error in the little vscode console - f
fast-rain-20339
07/02/2020, 1:47 PMThe solution to all of lifes problems lies in two lines of code - b
bright-gpu-74537
07/02/2020, 1:47 PMhmmm, ok, so it dispatched a changed event when selectedItem was null? - b
bright-gpu-74537
07/02/2020, 1:48 PM🤔 - f
fast-rain-20339
07/02/2020, 1:48 PMI guess so. Strange but the fix fixes it. - f
fast-rain-20339
07/02/2020, 1:48 PM(I think. Dear lord I hope I'm not celebrating early) - b
bright-gpu-74537
07/02/2020, 1:48 PMok, still sounds like a bug, if you managed to track it down to something minimal it would be useful, if not ill try in a few hours - f
fast-rain-20339
07/02/2020, 1:49 PMYep works fine with the null check. Yeah, could still be a bug. 11:40 here and I'm getting up before six, so I'm going to head off tonight. Thanks for your patience 👍 - b
bright-gpu-74537
07/02/2020, 1:49 PMout of interest, what does
trace as whenselectedIndex
is null?selectedItem - f
fast-rain-20339
07/02/2020, 1:49 PMI'll check - b
bright-gpu-74537
07/02/2020, 1:49 PMok, no worries