Latest Sony keyboard update from today fixes the issue so far for me.
Current: Sony XPERIA Z1 Compact (D5503) unlocked, rooted stock 4.4.4 | Asus Transformer Pad (TF300T) locked, rooted stock 4.3
Deprecated: Sony XPERIA Z, Sony XPERIA T, Samsung Galaxy S3, Samsung Galaxy Note, HTC DesireZ, HTC 7, Nokia N900, HTC Magic, HTC Touch Pro, SonyEricsson XPERIA X1, HTC Touch Cruise, HTC Canary (Orange SPV) et al.
Originally Posted by Ryland Johnson
It is clear that this phone has an awful lot more artificial intelligence than some of its owners.