Well, I can say such behavour is not normal and probably isn't directly related to Logic itself but more towards your controller(s) so...
Shut down your Mac...
Unplug all midi controllers plus turn off (not just put to sleep) your iPad/iPhone if you have one (In case something is running on those in the background causing an issue)
Now restart your Mac and launch Logic.
Create a new project.
Record a couple of Instrument tracks using the Musical Typing Keyboard (Logic's menu bar/Window/Show Musical Typing ) and see if you get any of the issues you are reporting.
if not then you have narrowed down the cause to something external or something being caused by a setting in an existing project created earlier.
If you continue to have an issue then delete the Logic prefs and the CS prefs as described below...
Delete the user preferences
You can resolve many issues by restoring Logic Pro X back to its original settings. This will not impact your media files. To reset your Logic Pro X user preference settings to their original state, do the following:
- In the Finder, choose Go to Folder from the Go menu.
- Type ~/Library/Preferences in the "Go to the folder" field.
- Press the Go button.
- Remove the com.apple.logic10.plist file from the Preferences folder. Note that if you have programmed any custom key commands, this will reset them to the defaults. You may wish to export your custom key command as a preset before performing this step. See the Logic Pro X User Manual for details on how to do this. If you are having trouble with a control surface in Logic Pro X, then you may also wish to delete the com.apple.logic.pro.cs file from the preferences folder.
- If you have upgraded from an earlier version of Logic Pro, you should also remove~/Library/Preferences/Logic/com.apple.logic.pro.
- Restart the computer.
Now test again exactly as described earlier and do not reconnect any controllers yet.... and see what happens..
