Several Issues, Bridge theme

I’ve installed the plugin couple of weeks ago, and worked perfectly… I actually loved it.

However, after I replaced some some images, suddenly some problems appear:
1) the plugin doesn’t appear at the first page loading, needs a refresh to work correctly
2) sliding control are duplicated, and lost their original shape/layout
3) mouse over doesn’t work anymore
4) the image set as after, is cropped under the image before
5) I tried the “comparison slider”, one of the element included in “wp bakery builder”. Seems that it inherit all the classes from twentytwety, even if the plugin is uninstalled.

Could you please help with that?
Regards

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