Delayed acceleration on alio

Sometimes, instead of accelerating normally, alio won't accelerate, keeps trotting/walking, but starts using stamina as if it was running already. This lasts few seconds (alio trots/walks, but uses stamina) after which alio will accelerate and start running normally.
Reproduction steps unknown. Tested when going uphill, downhill, on flat terrain, and no clear trigger observed. Issue happens only sometimes, and lasts several seconds. Alio will start running eventually, no additional input from player required. In a normal 2-hour game session issue happened 4 times.
On the video I started to press sprint button at 8s mark, but actual acceleration happened at 10s mark (after walking on sand patch)

EDIT: Just encountered this bug on stego. Reproduced 3 times in 5 minutes. So not alio-specific, but can't change title at this point. Video with stego uploaded.

After pressing sprint button, alio doesn't accelerate, but starts using stamina like it were sprinting.

Alio should start accelerating immediately after pressing a sprint button.