There is an error string in the tail, is it a bug?

I save this url in table:
http://www.arbetsformedlingen.se/For-arbetssokande/Lediga-jobb.html?url=-123388378%2FNy%2FSokPlatsannonser%2FSokPlatsannonser.aspx%3Fq%3Ds%28sn%28Marknadsf%2525c3%2525b6ring%29sida%281%29ar%2820%29se%284%29got%280%29%29&sv.url=12.237ec53d11d47b612d78000171


But, there is a "[...]" in the tail of this url, please see below and screenshot.
http://www.arbetsformedlingen.se/For-arbetssokande/Lediga-jobb.html?url=-123388378%2FNy%2FSokPlatsannonser%2FSokPlatsannonser.aspx%3Fq%3Ds%28sn%28Marknadsf%2525c3%2525b6ring%29sida%281%29ar%2820%29se%284%29got%280%29%29&sv.url=12.237ec53d11d47b612d78000171 [...]

Is it a bug ? I hope some one can help me. Many thanks!

I forget to tell you the field information:
1, feed name is url
2, type is varchar
3, length is 1000

Field values are cut at 256 characters when loading, to prevent huge memory consumption and to limit bandwidth requirements. Once you start editing a row, the full values are loaded, and you don't see that "[...]" any longer.

When I edit this item, it still has "[...]" , you can see the screenshot.
And you can try in your local mysql , I think you will reproduce it.

I couldn't reproduce it. Furthermore, the ellipsis character used by HeidiSQL is a plain "..." (no square brackets). Are you sure you don't have a real "[...]" string in your data? It should be fairly easy to check with any other client (e.g., go to "Tools/ Launch command line").