Three issues in one here:

The first issue is that thermal expansion's creative tabs are messed up in snapshot 75 - itemGroup.ThermalExpansion(Blocks, Items, Tools, Florbs).

The second issue is that if the tab/preset name is that long, it goes outside the GUI.

The third issue is that when I resize minecraft, the list of presets in a filter goes back to the top. This one is just slightly annoying

1. This is a Thermal Expansion problem (they register a different tab in the client side then on the server side, which causes this weirdness)
2. Easy to fix, will do now
3. Minecraft forcibly resets all GUI components when resizing, sadly I can't fix that :(