Vertically moving doesn't update effects

Describe the bug

Gutters have the UNSTABLE flag, which makes them apply the bouldering effect when you step onto them. This is also applied by downspouts, so when you step onto the downspout, you get the flag, and then when you climb up you keep it.

This doesn't happen if you climb up from a non-UNSTABLE tile, which you can do with adjacent furniture, corners, or other conditions. You will stand on the gutter above with no UNSTABLE listed, and can even wait there as long as you want and it won't pop up until you do.

Similarly, if you climb off a roof without using the downspout, you'll still have the bouldering effect even if you are stood on flat ground. The effect will not be removed until you take a step.

Attach save file

N/A

Steps to reproduce

Climb up on a roof without using the downspout, see that you do not get unstable footing even though you are supposed to.

Climb off a roof and see that you can keep the unstable footing debuff for hours even if you're just chilling on some grass.

I am guessing this is down to how our vertical movement is separate from our xy movement, and it's not checking the flags on the new tile you enter, at least as far as conditions from terrain flags are concerned.

Expected behavior

Unstable tiles should make you unstable when you step on them. Stable tiles should remove your unstable effect when you enter them.

Screenshots

No response

Versions and configuration

OS: Windows
- OS Version: 10.0.19045.3803 (22H2)
Game Version: 0.G-6266-g3cf2f5f41f [64-bit]
Graphics Version: Tiles
Game Language: System language []
Mods loaded: [ Dark Days Ahead [dda], Disable NPC Needs [no_npc_food], Portal Storms Ignore NPCs [personal_portal_storms], Slowdown Fungal Growth [no_fungal_growth] ]

Additional context

No response

CleverRaven / Cataclysm-DDA