When attempting to type in Minecraft using keyboard and mouse, the xbox controller keyboard UI pops up, and I have to type what I want into that, then press enter. Then the text is placed where I want it, and I have to manually click the necessary buttons to enter the text into the game chat. Before, I was able to operate like I was playing on PC. Now, it is making me do things I would only need to do on controller.
Related issues
Comments

Thank you for your report!
We're tracking this issue in MCPE-159777, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki