Wrong graph (right text) for swap after swapoff/swapon

[pabloab]

Indicators were working fine. After a sudo swapoff -a, sudo swapon -a (not sure if a while between these commands affect) the text correctly show 0% and the graph correctly doesn't show any swap used. After a while (around 10', probably when system use swap space again) the text show the correct usage but the graph show as if it was at 100%.

If I disable and enable again, the issue is fixed:

Steps to reproduce the issue:

1. sudo swapoff -a
2. sudo swapon -a
3. Wait 10' (not sure what's the trigger/cause).