Battery Discharge when plugin charger on multi-plug has no power

Did anyone notice that when Lumia 950 XL plugin on charger in multi-plug. If you switch off the multi-plug power then lumia 950 xl automatically discharging the battery and getting to much warm.

Is that any software issues or hardware issues. Anyone know that issues please let know.If you solve this issues how you did this.
:unhappy:

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