Rally App Disappears - Why?

Rally App Disappears - Why?

I currently have an app that has five components. On the left I have a
radio button field and a grid below it, on the right I have a display
field, chart, and another grid [top to bottom]. The radio buttons filter
every other component by a certain date, and the left grid [when selected]
will filter the right components by the selected object.
Currently the app does what is needed, but when I select a few radio
buttons in a row OR select a few objects in the grid, the app will
eventually totally disappear. I tried running the app externally and
internally with a custom HTML app, but the problem does not go away.
Here is a picture of the app before anything crashes:

Interestingly, when I look through the chrome debugger and look at the
Elements tab, I see there are lots of masks that have been created and not
destroyed. Here is a picture of a slight piece of the HTML that looks
fishy and occurs after I select a few objects from the left grid:

Every time I select a new object, one more mask will be added to the DOM.
I don't know if this is what breaks my app, but it seems odd so it may be
related?
I didn't include any code because I thought it should be some easy fix -
plus, the code does exactly what it should [before it disappears]. Any
help on how to fix an app that disappears would be great!