Filtering feature doesn't work on columns made with arithmetic expressions of other columns

[aedelgado19]

When you load in a df to display, then add in a column to that df that is currently displayed via the code, the column cannot be used to filter.

Steps to recreate issue:

1. Display a dataframe in the pandastable GUI
2. Create column that uses other columns (I have a function that generates column data based on other column arithmetic and it successfully fills the column with data). The expression I used was (({height_1} / {height_2}) < 0.1) and ({name} == "Bob") which fills a new column "to_be_checked" with true or false values successfully for each row.
3. The new column appears in the manual filter dropdown, but if you use it in a filter (ex: filter for only "True"), pandastable code raises a KeyError since it cannot find the location with .get_loc(key)

shared images of error traceback -- the error is within pandastable code.

[dmnfarrell]

I can't replicate this as you appear to be creating the new column in code. I imagine its because the table has not been properly updated in some way even though the column appears in the filter list. Sorry for long delay in replying to this bug.