Steps to reproduce:

• Open Problems/Problem hosts/Problems by severity/Top triggers widget edit or create form
• Check Problem input field max length (should be 2048)
• Open e.g. Reports->Top 100 triggers page (master) or any other page where Problem input field appears in the filters section
• Check the Problem input field max length

Result: The Problem input field max length = 255.

Expected: I guess it should be the same as in database and widget(s) (2048).

Note: In the case of release/6.0 and release/6.4 max length of the Problem input field is 255 (in widgets and pages where filtering by 'Problem' is used). Maybe a fix should be implemented also for those versions.