Noticed this myself yesterday when i backed my rom up to test out a new one on my I9505 that was running [AOSP] Official 4.4.2 - S4 Google Edition - Final-R1.2 - Feel the Experience of Nexus.
Thought it was just me but guess not. Not a biggie as i rename my backups to a memorable title.
Phone: SGS I9505
Rom:[ROM] Some Build Of CM
Tablet: Acer Iconia A500 Tablet.
Rom: JB-MR2(4.3.1) - V8t6