Linear Regression Widget (or more likely test learner widget) does not follow filtered attributes

Use case: Linear regression
- take a suitable dataset (more than 1 predictor variables, 1 response variable (to be predicted))
- do a regression with only 1 predictor variable
- do a regression with all the predicotor variables

in test learners they will show the same performance scores results (ie the results of the full regression,
i suspect because of the data feed for test learners), so the performance scores of the regression with 1 only variable are false

as a check showing the regression statistics for each regression method does show the correct data

version 2.7.8