UI Issue : Graceful FailOver should be default behavior and option should be provided for 'Hard FailOver'

I got the following confirmation

Attention – A significant amount of data stored on this node does not yet have replica (backup) copies! Failing over the node now will irrecoverably lose that data when the incomplete replica is activated and this node is removed from the cluster. It is recommended to select "Remove Server" and rebalance to safely remove the node without any data loss.
Please confirm Failover.
Or pick graceful failover.

there are couple issues here:
1. I'm able to check both checkboxes but according to "Or" condition it's should be impossible
"Please confirm Failover.
Or pick graceful failover."

2.not clear when it happens
when I got this confirmation I opened confirmation dialog in other browser tab did not find it anymore

I selected both checkboxes and failover
Failed over 'ns_1@10.3.4.146': ok
so, in cluster I have 2 healthy nodes and 1 graceful failovered

then I try to failover any other node

Attention – A significant amount of data stored on this node does not yet have replica (backup) copies! Failing over the node now will irrecoverably lose that data when the incomplete replica is activated and this node is removed from the cluster. It is recommended to select "Remove Server" and rebalance to safely remove the node without any data loss.
Please confirm Failover.
Or pick graceful failover.

"pick graceful failover" doesn't have checkbox here and I can't perform graceful failover anymore

Alk, could you explain this behavior?