Editor: matchrate filter search problem

There is a problem with matchrate range-filter, shown in the matchrate-column's menu in the editor grid. If both values are set, for example "> 79" and "< 90" sometimes grid anyway shows records having matchrate=100, so it seems like this kind of filter is not always working properly.

If task is opened and the filter is set (both values at the same time) it can be reproduced. If then task is left, then opened again, then only the 79 as minimum, and then (after some delay) 90 is set as maximum - the filter works as it should. Therefore it looks like a front-end issue.