Certain strings are generating KaTeX parse errors and breaking the app.

Problematic inputs so far (with errors):

• \begin{align}\blue{10}\times\green{\dfrac{1}{5}}&=\blue2\\\n\\\n\pink{15}\times\green{\dfrac{1}{5}}&=\pink{3}\\\n\\\n\purple{20}\times\green{\dfrac{1}{5}}&=\purple{4}\end{align}
  Uncaught Error: KaTeX parse error: No such environment: align at position 7: \begin{̲a̲l̲i̲g̲n̲}̲\blue{10}\times…
• \
  Uncaught Error: KaTeX parse error: Unexpected character: '' at position 1: \̲

Sometimes if you move a card very slightly it will not return to the base position