Long story short: I used the share option on a particular extension to read the whole text of something on gvoice. And as a result, all share buttons on all apps default to gvoice instead of pulling the list of share options.
I tried clearing defaults but there was nothing to be cleared. I tried force closing and clearing the data & cache for the app but it didn't remedy the problem.
I haven't gone as far as uninstalling the problem app and performing a soft reset just yet, so is anyone experiencing something similar? Thanks!
Posted from my "CrackDroid" Nexus 4 via the Android Central App