Druid Travel form speed is cut by 50% when I hit level 20

All 65 of my characters (on this account) are druids, and all 65 of them are between levels 17-22. I’ve noticed that whenever I hit level 20, on any character, my druid’s “travel form” becomes MUCH slower than it was at level 19. I spent an hour with a “Guide” player troubleshooting this, and he had no idea. I’ve communicated with two different Blizzard support people, and they had no idea. (They really didn’t try very hard, if at all.)

Everyone who tries to help me immediately thinks it must by the run/walk toggle. No, it isn’t that. In fact, the run/walk toggle doesn’t have ANY impact on my travel form, although it does have impact on my cat and normal forms.

Now that flying is available at level 20, travel form allows me to fly, but even my flight speed is as slow as my normal ground speed on foot. It takes me 1:24 to actually “fly straight” from one Auction House to the other in Org, while it takes only 0:59 seconds to walk the convoluted path using cat form. And it takes 1:17 to use travel form on the ground (or going by foot) using the same path as cat form.

So why is travel form the exact same speed as going by foot after level 20, but before level 20 travel form is faster. Before level 20 it takes 1:02 to travel the same distance. At level 20, the time takes 1:17 or 1:24, as explained above. Shouldn’t we get a speed boost for hitting level 20, not a speed penalty?