variableInspector window stops refreshing if variable is bound to double backslash

[MrAnimaniac]

The variableInspector window does stop to refresh its output if a variable is bound to a double backslash like a='\\'. It starts working again if you override this variable. For example, if you add a letter, number, or space to a or override it with a completely different value. _jupyterlab_variableinspector_dict_list() is not affected by this behaviour and continuous to update.

update: it is much easier. If a variable is bound to a string ending with a double backslash, the variableInspector windows stops refreshing. If it ends with anything else, it works properly.