with Engine(clear=True) as eng: not clearing all data

OS: Windows the second time i run a file with the line phys = eng.new_character('physical', nx.grid_2d_graph(20, 20)) inside of it I get errors despite clear=True being set on Engine creation:

F:\Ursina\lise_test>python3 sim.py
<class 'LiSE.engine.Engine'>
Traceback (most recent call last):
  File "F:\Ursina\lise_test\sim.py", line 6, in <module>
    phys = eng.new_character('physical', nx.grid_2d_graph(20, 20))
  File "C:\Users\redacted\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\LiSE\engine.py", line 1557, in new_character
    self.add_character(name, data, **kwargs)
  File "C:\Users\redacted\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\LiSE\engine.py", line 1572, in add_character
    self._init_graph(name, 'DiGraph', data)
  File "C:\Users\redacted\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\LiSE\allegedb\__init__.py", line 1624, in _init_graph
    raise GraphNameError("Already have a graph by that name")
LiSE.allegedb.GraphNameError: 'Already have a graph by that name'

sample code producing the issue:

from LiSE import Engine
import networkx as nx

with Engine(clear=True) as eng:
    print(type(eng))
    phys = eng.new_character('physical', nx.grid_2d_graph(20, 20))
    tri = eng.new_character('triangle')
    sq = eng.new_character('square')

    empty = list(phys.place.values())
    eng.shuffle(empty)
    # distribute 30 of each shape randomly among the empty places
    for i in range(1, 31):
        place = empty.pop()
        square = place.new_thing('square%i' % i, _image_paths=['atlas://polygons/meh_square'])
        sq.add_unit(square)
    for i in range(1, 31):
        place = empty.pop()
        triangle = place.new_thing('triangle%i' % i, _image_paths=['atlas://polygons/meh_triangle'])
        tri.add_unit(triangle)

python version: Python 3.9.10

installed modules:

Package            Version
------------------ ---------
activitypub        0.0.3
astunparse         1.6.3
blinker            1.4
cachetools         5.0.0
certifi            2021.10.8
charset-normalizer 2.0.12
click              8.0.1
colorama           0.4.4
decorator          4.4.2
dnspython          2.0.0
docutils           0.18.1
ELiDE              0.12.1
Flask              2.0.1
Flask-Cors         3.0.10
future             0.18.2
idna               3.3
itsdangerous       2.0.1
Jinja2             3.0.1
Kivy               2.0.0
kivy-deps.angle    0.3.1
kivy-deps.glew     0.3.0
kivy-deps.sdl2     0.3.1
Kivy-Garden        0.1.4
LiSE               0.12.1
lz4                4.0.0
MarkupSafe         2.0.1
msgpack            1.0.3
networkx           2.5.1
numpy              1.22.2
Panda3D            1.10.10
panda3d-gltf       0.13
panda3d-simplepbr  0.9
pefile             2021.9.3
Pillow             8.4.0
pip                22.0.3
py2exe             0.11.0.1
pygame             2.0.1
Pygments           2.11.2
pymongo            3.11.2
pyperclip          1.8.2
pypiwin32          223
python2            1.2
pywin32            303
requests           2.27.1
screeninfo         0.8
selenium           3.141.0
setuptools         60.9.0
six                1.16.0
urllib3            1.26.2
ursina             4.1.1
Werkzeug           2.0.1
wheel              0.37.1

TacticalMetaphysics / LiSE

with Engine(clear=True) as eng: not clearing all data #88