Output no longer on single line in Jupyter notebooks

[dnadlinger]

I am using latest ProgressBars.jl (d994f48) from Julia 1.6.

When used from Jupyter notebooks, the output used to be a neat, single line:

99.5%┣████████████████████████████████████████▉┫ 200/201 [04:47<00:01, 0.7 it/s]

This was some months ago. Now, however, running the same notebook results in each update being displayed on a new line.

Clearly, updating some package somewhere broke this. However, I don't seem to be able to reproduce the old, working behaviour anymore. Any idea where to start debugging this?

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In this instance, I am using macOS with the following versions:

$ jupyter --version
jupyter core     : 4.7.1
jupyter-notebook : 6.3.0
qtconsole        : 5.0.3
ipython          : 7.21.0
ipykernel        : 5.5.0
jupyter client   : 6.1.12
jupyter lab      : not installed
nbconvert        : 6.0.7
ipywidgets       : 7.6.3
nbformat         : 5.1.2
traitlets        : 5.0.5

The same occurs on Linux with the latest PyPI versions for everything, installed via pip.