There are, aside from the unseemliness of gloating, some good reasons not to do that.
From the washingtonpost.com
The unseemliness of the deals has forced the resignation of Ezoe and 20 other people.
From the time.com
The new Senate Select Committee probing Iranscam is determined to avoid such unseemliness.
From the time.com
Unseemliness is difficult to define, but we know it when we see it.
From the dispatchpolitics.com
In one way, there's an unseemliness to this campaign check-passing, which may be of recent vintage.
From the latimes.com
There's an unseemliness in having a government department lobby directly for its own authority, but the Fed went too far.
From the theatlantic.com
Any unseemliness must be avoided.
From the independent.co.uk
This column has conducted its own thoroughly unscientific survey to discover the terms Googled alongside our own leading women politicians, and I'm happy to report no such unseemliness.
From the independent.co.uk
More examples
A lack of consideration for others
(unseemly) indecent: not in keeping with accepted standards of what is right or proper in polite society; "was buried with indecent haste"; "indecorous behavior"; "language unbecoming to a lady"; "unseemly to use profanity"; "moved to curb their untoward ribaldry"
(unseemly) Inconsistent with established standards of good form or taste