I don't know if it's even worth mentioning and may be fixed in the new betta, but on line 11 in wordgraph_block.tpl there's a "px" missing:

OPEN wordgraph_block.tpl

FIND on line 11
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<span style="font-size: {wordgraph_loop.WORD_FONT_SIZE}">


REPLACE WITH
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<span style="font-size: {wordgraph_loop.WORD_FONT_SIZE}px">


This will make it a valid css