The Steep Direction Sets the Speed Limit

$0 < \alpha < \dfrac{1}{3}$; and at $\alpha = 0.05$ both coordinates converge to the minimum.

$0 < \alpha < \dfrac{1}{25}$; and at $\alpha = 0.05$ the run diverges because $u$ blows up while $v$ settles.

$0 < \alpha < \dfrac{1}{50}$; and at $\alpha = 0.05$ the run diverges, with $v$ oscillating.

$0 < \alpha < \dfrac{1}{25}$; and at $\alpha = 0.05$ the run diverges: $u$ still creeps toward $2$, but $v$ flips sign every step while its distance from $-1$ grows by a factor of $1.5$.