Thanks for the confirmation @Andreas_Hegenberg! I will remove the input methods until this is fixed. For reference, here is my configuration. The only thing that is different from @cheemeng is the Simplified Handwriting input, while @cheemeng has Traditional.
Again this is some "what are the odds" situation, haha, I never expected someone else with the same MBP configuration and the same language layout! Thanks @cheemeng and thank you @Andreas_Hegenberg for looking so closely into this bug report!