Thanks to my fellow posters; I tested and you are correct, the log is just wrong.

Thanks for your response Qeepel. I do think that this is a bug in the log that should be fixed. Here is a revised bug report using the template you linked to.:

Thread Title:
Too late to change the thread title now so I'll just describe it here. When on a level 50 class, the log continues to state we're earning exp. This expands to imply that we're using our resting bonus buff when we really aren't. The log should not be saying that we're earning exp when we are not, and it should not be referencing the 50% bonus to exp from resting bonus when we are under that either.

ISP:
TSN

Type of Internet Connection:
ADSL2+

Internet Connection Speed:
24Mbit/s (supposedly, I'm in Australia though so...)

Date & Time:
Any time of day or night.

Frequency:
Always

Character Name:
Crystal Dreams

Race:
Elezen F

World:
Ridill

Class/Level:
Armourer, weaver, blacksmith. Level 50.

Area and Coordinates:
Market wards in Uldah, all of the crafting guilds, really anywhere and everywhere.

Party or Solo:
Solo

NPC Name:
None

Monster Name:
None

In-Game Time:
Constant while on level 50 jobs, any time of day or night.

Steps:
Go onto a level 50 class. Earn experience. Earn experience on a level 50 class while under the resting bonus buff to see that reflected in the supposedly earned experience with "You have earned [quantity] (+50%) experience points."