iOS simulator scrolling action too fast - xcode

After upgrading flutter 3.7.0 yesterday, my iOS Simulator's scrolling speed changed to fast. Every single scrollable speed changed significantly. I don't want to downgrade flutter version, because when I create new flutter file and start iOS Simultator, it works fine. So I think it is not a flutter version problem. How could I do?

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Simulator under iOS 13.3 (Xcode 11.3.1) not functioning properly

When using the simulator under Xcode 11.3.1 and iPhones simulating iOS 13.3, the simulation does not behave correctly. It works correctly under simulator iOS 12.1.
I get no messages that I don't also get under the iOS 12.1 simulator launch.
The behavior should be when a user starts the app for the first time, he is redirected to the signin screen. Instead it goes to the main screen (grayed out because there is no data). I can navigate manually to the signin screen and signin normally (device registers and appears on my online server) but the app should start downloading the database required to work. It just sits there (no alertview that would normally launch the download). If I relaunch the app, it again starts at the main screen, however at this point an alertview should appear that no database is present. If I manually try to start the download (in a setup screen within the app), the progress bar that normally appears does not, just a label signifying what database is suppose to download.
All of this works properly on the iOS 12.1 simulator (Xcode 10.1) of the same type (iPhone 8 Plus).
Is this an Xcode 11.3.1 bug or iOS 13.3 problem. I have customers using iOS 13.1 without any problems on actual devices. I am on a new iMac running Catalina, is it possible its a security setting to allow database download?
I was facing the same issue and I move back to Xcode 11.3. Guess it was not a stable update at all.

xcode 6.x simulators are not showing up

I have a xcode 6.x project in which i made small changes. Now i want to submit it to app store.
But none of the simulators are showing up.
i was using xcode 6.4 but then i download xcode 6.2 and it still doesn't work. How do archive it and submit it to appstore?
I cannot use latest xcode because the project is in swift so will have to make alot of changes, it's a big project.
This issue can happen if the width of the Xcode window is too narrow. Try resizing the window wider, and they should re-appear.

XCode simulator won't run most recent code

I've been writing an app and I've released one version to the App Store. I've updated it slightly since then and have been playing with it on the Simulator. Unfortunately the Simulator has stopped reacting to the changes in my code. I know it's the simulators fault because if I run the app on my iPad the changes take effect.
I've tried resetting the simulator by going iOS Simulator -> Reset Content and Settings, I've tried quitting the Simulator and Xcode.
I have no clue why the Simulator is not working properly. It's just blatantly not updating.
Clean your project with command+shift+K.
Quit Xcode and clean ~/Library/Developer/Xcode/DerivedData manually. Remove all of its contents.

iOS app hanging on splash screen - compatibility issues?

iOS 8, xcode 6.0.1, unity 4.54f1
Last night I updated my iPhone5 to iOS 8. It requested xcode 6.0.1 which in turn requested to update Unity. I did everything that was asked and now after I build to my iPhone, the app gets stuck on the splash screen. I tried building to an iPad with iOS 7 and that did not work either.
They both get stuck after the log says applicationDidBecomeActive() and then applicationWillResignActive(). Exiting the app will say that Thread0 has crashed and it will show me a method call that worked fine 2 days ago. Android still works perfectly fine.
My question is: are there compatibility issues between xcode/unity/ios8/all 3 at this point? What can I do about it?
It turns out that the problem was with a hackish plugin that was made to run a unity app in the background which no longer applies to the current version of xcode. Apologies for wasting your time.

Can't run on device after installing iOS 4.2 and the 4.2 SDK

I installed iOS 4.2 on my 2nd-generation iPod Touch last week. I tried running my application on the device through Xcode, but it didn't work (because Xcode didn't yet support iOS 4). To solve that, I installed Xcode 3.2.5 and the iOS SDK 4.2. Now I can get the app to run in the iPhone/iPad Simulator just fine.
However, I can no longer select "Device" from the menu at the top of the screen. It's a choice, but when I try to click on it, it never actually gets a check mark.
Because of this, I can no longer run the app on my iPod. The other (related) problem is that I can't choose "Build and Archive" from the Build menu anymore because the target is not a device.
Why is this happening? Do I need to change some settings in my project, or something with my device itself?
EDIT: Upon closer investigation, it appears that I can't select anything but the iPhone Simulator 4.0. Maybe there's something wrong with the project file.
Check that the base SDK is set to Latest iOS (currently set to iOS 4.2) for your Xcode project and your target's product, then perform a rebuild and see if your iPod is recognized.
Also try visiting the Xcode Organizer and see if it's asking for anything from your iPod. Typically Xcode will want to collect some data from devices whose OS receive updates, so it can update itself and install your apps on the updated OS properly.

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