Improve Direnni Tower's steep slope handling?

[pango]

I recently noticed in a stream that the climbing of the very steep slope that exists in Direnni Tower between the "pyramid" and the "wraiths chamber" isn't particularly smooth:

• when climbing it up, auto climbing is enabled, and you automatically climb the slope to the top;
• when trying to climb it down, rappel mode usually triggers several times in a row, then it stops and you stay stuck halfway thru the slope, sometimes taking fall damage at that point. And if you release your move backward key, auto climbing starts

I checked back to 0.10.21 included that this behavior is globally unchanged, so I don't think it's a regression with the recent improvements to Scourg Barrow exit climbing, as I originally feared.