Kivy Clear_widget strange behaviour (reproducible code attached)

Kivy Clear_widget strange behaviour (reproducible code attached)

References

Reference NO 1

http://stackoverflow.com/questions/15193494/kivy-clear-widget-strange-behaviour-reproducible-code-attached

Reference NO 2

http://stackoverflow.com/questions/14329174/kivy-button-loop-bind-on-press-to-call-back

Reference NO 3

http://stackoverflow.com/questions/18215388/kivy-horizontal-listview

Reference NO 4

http://stackoverflow.com/questions/15677154/kivy-screen-manager-reference-in-kv-language

Reference NO 5

http://stackoverflow.com/questions/17120239/simple-kivy-tab-example

Reference NO 6

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Reference NO 7

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Reference NO 8

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