Illustrator type grays out with mouse hover

i updated cc version of illustrator today , when go edit type, type block turns solid gray when mouse hovers on type selection tool, direct selection, , type tool. can't seem edit type.

 

can tell me why happening?

• is flaw in upgrade (which, btw, program crashes when open documents)? if flaw, how fix it?
• or new feature appeared in upgrade no instructions on how use it? if new feature, can point me tutorial on how use it?

 

this problem seems occur documents i've created in last week. new documents , documents created several months ago don't solid gray problem , can edit type normally.

 

i use cc on pc running win 7. here screen shot of how document looks grayed-out type.

 

 

also, crashes when open documents. (i know that's separate issue.)

 

many thanks.

update: issue seems work when type has drop shadow applied. once remove drop shadow, type can edited again.

 

does know if graying of type when selecting , moving type new standard within recent update of illustrator cc?

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