Clicking Max means you cannot send a tx

[sidhujag]

You need to deduct fee from the amount if Max is selected

Also Max should be green like the colour of the arrow icon to switch between deposit/withdrawal modes

[sidhujag]

On optimism it calculates with the fee and shows insufficient if you click max unless you reduce the amount and it recalculates after you change the field after half a second:

Notice the message AND button changing to insufficient balance.

I think this message can show if you select more than max and max should be balance - fee (select total amount)

[sidhujag]

Also top Available should change to "Balance:" to be consistent