Bug report

Bug summary

3D axes limits set using set_{x,y,z}bound are dropped when interactively rotating 3d axes.

Code for reproduction

import matplotlib.pyplot as plt

ax = plt.figure().add_subplot(projection="3d")
ax.plot([0, 1], [0, 1], [0, 1])
ax.set(xbound=[-1, 1], ybound=[-1, 1], zbound=[-1, 1])
# ax.set(xlim=[-1, 1], ylim=[-1, 1], zlim=[-1, 1])
plt.show()

then interactively rotate the axes with the mouse.

Actual outcome

The axes limits immediately snap back to [0, 1] (plus margins).

Expected outcome

Limits are respected (as with set_{x,y,z}lim).

Matplotlib version

• Operating system: linux
• Matplotlib version: master
• Matplotlib backend (print(matplotlib.get_backend())): qt5agg
• Python version: 38
• Jupyter version (if applicable):
• Other libraries: