Bug report

Bug summary

rotating different text by 90 degrees give different baseline alignment

Code for reproduction

import matplotlib.pyplot as plt
plt.figure(figsize=(2., 2.))
plt.text(0.5, 0.0, 'yB', fontsize=40, rotation=90)
plt.text(0.5, 0.5, 'By', fontsize=40, rotation=90)
plt.show()

Actual outcome

Expected outcome

Expected 'yB' and 'By' to be aligned

Matplotlib version

• Operating system: CentOS Linux 7
• Matplotlib version: 3.0.3
• Matplotlib backend (print(matplotlib.get_backend())): Qt5Agg
• Python version: 3.6.8

installed via conda