Not sure, but this seems like a but. I can fallback when riding, and when wolf comes to me, I'm already mounted.

This log is when mounted.

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Irdrinil, an elder monk is covered with bleeding wounds.

civilized <77%hp 100%m 100%mv 9484tnl (1.21%) 11 AM>
You retreat from the heart of combat and fall back to a safer position!
Irdrinil, an elder monk is covered with bleeding wounds.

civilized <77%hp 100%m 100%mv 9484tnl (1.21%) 11 AM>

A vicious warg's chomp devastates Irdrinil, an elder monk!
Irdrinil, an elder monk's punch mauls a vicious warg.
Irdrinil, an elder monk's punch mauls a vicious warg.
Your stab EVISCERATES Irdrinil, an elder monk!
Irdrinil, an elder monk is covered with bleeding wounds.

civilized <77%hp 100%m 100%mv 9484tnl (1.21%) 11 AM>
flee
flee
PANIC! You couldn't escape!
Irdrinil, an elder monk is covered with bleeding wounds.

civilized <77%hp 100%m 100%mv 9484tnl (1.21%) 11 AM>
Hallway Through the Monk's Personal Chambers


You flee from combat!

civilized <77%hp 100%m 100%mv 9484tnl (1.21%) 11 AM>

A vicious warg has arrived.

civilized <77%hp 100%m 100%mv 9484tnl (1.21%) 11 AM>
mount
You are already mounted.