I'll answer this since I'm getting the same problems.

Thread Title:
Action timers either not displaying or incorrect

Platform:
Windows 7N

ISP:
BT Broadband

Type of Internet Connection:
Cable

Internet Connection Speed:
2M/bps

Date & Time:
Happens every time I play since 1.19 (GMT+1)

Frequency:
Always

Character Name:
Uriko Savari

Race:
Race of your character when the issue occurred.
Miqo'te

World:
Saronia

Class/Skill Rank:
Archer Rank 44

Area and Coordinates:
Happens anywhere in the world

Party or Solo:
Doesn't matter, issue is constant

NPC Name:
None

Monster Name:
Any monster, doesn't matter

Steps:
- Quickstride only displays as lasting for 20 seconds, but once the timer hits 00.00 it remains on that for 10 seconds (should last 30 seconds)
- Raging Strike II is not displaying a cooldown timer
- Multishot's timer is 5 seconds (should be 15), but is unusable for 15

Happens every single time, tried re-logging, tried exiting game. No effect.