When you use the next/previous feature in todo mode, the current test (T282) must be found in the current todo list, i.e. T282 must match the current filter on the Todos tab, so that TestRail knows where to jump to. If T282 does not match the filter (is not shown on the Todos page for the test run and configured filters), “next” will jump to the last test of the todo list. Likewise, “previous” jumps to the first test in this case.
So, if “next” jumps to the last test, T282 probably didn’t match the current todo filter. What may be causing this behavior is when you set T282 to “passed” and have configured the todos to not include “passed” tests (“All But Passed”), T282 doesn’t match the filter anymore and TestRail jumps to the last case. If you also include passed tests in your todo list, jumping to the next test should work.
I hope this helps.