Description:
Strange Behavior when masking format from 'HH:mm:ss' to 'HH:mm' and backwards. Hours are being 'deleted' while masking between formats.(behavior preserves also with formats 'HH:MM:ss'/'HH:MM')
Codepen link: https://codepen.io/krntamuv-the-builder/pen/xxmyzbd
In codepen example try to press the buttons several times. The problem fixes when ':ss' in format is replaced with ':SS'. Then hours stop disappearing.
However formats including dates (ex. 'YYYY/MM/DD HH:mm' to 'YYYY/MM/DD HH:mm:ss') work fine.