Chipped figure in matplotlib for a plain quantum circuit

Information

• Qiskit Terra version: 0.16.1
• Python version: 3.8.6
• Operating system: Artix Linux

What is the current behavior?

When drawing a plain quantum circuit (just initializing the quantum and classical registers without implementing any gates), the figure rendered in matplotlib renders chipped text. Testing this with a previous release of terra (I used 0.15.1), the text appears fine without any chipping whatsoever.

Steps to reproduce the problem

from qiskit import *

qr = QuantumRegister(2)
cr = ClassicalRegister(3)
qc = QuantumCircuit(qr,cr)

qc.draw('mpl')

With current release (0.16.1):

With a previous release (0.15.1):

What is the expected behavior?

The expected behaviour is to draw the circuit without any text chipping and draw the circuit as implemented in version 0.15.1.

[1ucian0]

Assigning it to you in that case. Thanks.

[paniash]

@arkarc What error are you getting with the ‘mpl’ backend? Also, please open up a separate issue for this, since this does not pertain to this issue thread. Thanks!