Hey there remolade,
Thanks for reaching out to Apple Support Communities. We're happy to provide some assistance.
Was anything updated or changed when this started occurring? What app are you noticing this on?
This may seem like a simple step, but have you restarted your device? Restarting your device can resolve unexpected issues. Take a look here on how to restart your iPad: Restart your iPad
Let's also update your iPad if it is not updated already:
Update your iPhone, iPad, or iPod touch
If you have recently added a keyboard, try removing it to help isolate the problem:
Remove a keyboard: Tap Edit, tap
next to the keyboard you want to remove, tap Delete, then tap Done.
We hope this helps.
Have a great day!