I use SwiftKey on Android since almost the beginning. I'm pretty used to it and have found my preferred way of setting it up.
One of the settings I like is the option to not capitalize words automatically. When I chat I mostly prefer not to start with capital letters unless the conversation is formal or professional.
Since maybe a week ago, some (not all) of the words predicted in Spanish are being capitalized automatically and it's annoying. This doesn't happen with all the words, but it must have been a mistake in a language update or something similar (I didn't manually update of change anything in the app during the last month).
I tried enabling the feature and disabling it again but it didn't solve the problem.