The title says all that needs to be said. This is happening in Notes, Mail, and some textfields in Safari.
Bug First Encountered:
How often the bug occurs:
Device(s) bug has been encountered on:
In some cases, turning on the on-screen keyboard with space and 1-4-6 will bring the cursor back, but this is not a reliable work around. If the keyboard is already visible, sometimes toggling it off and back on again can sometimes bring the cursor back.