GUI features changing when I run my GUI

I've built a GUI in MATLAB, and all everything works great, except for the cosmetics. The layout has 5 standard input text boxes, all accept number values. After the numbers are put in by the user, I have a button to select an image file (labeled "Find File"), and a button (labeled "Compute") to calculate and plot the associated data points. However, two problems, which are illustrated in the attached image.

1) After I've entered values in all textboxes, I'll click the "Find file" button to search for the image file. At this point, the last of the textboxes disappears. (The callback does nothing with that specific textbox).

2) When I click the "Compute" button, it changes the label of the first button.

...is this just a bug in MATLAB's GUI making? Or has anyone else found this, and found a fix as well?

[Image Analyst]

What version of MATLAB are you using? You did not attach your image. No, there is no reason that clicking a pushbutton should make all your edit text boxes disappear. That never happens to me.