Object effects: drop shadow not displaying or exporting

[OrbisMedia]

My drop shadow effects aren't displaying in a couple of documents, they are all set up 100% correctly as per usual. If I export to pdf they don't display there either.

If I copy and paste text from a document that is working as per expectations, the drop shadow disappears.... 

Any ideas, I've been using InDesign for over 10 years and can not work it out!

[Laubender · Accepted solution]

Hi OrbisMedia,

will pasting in the same document work?

If yes, inspect the text frame after pasting in the other document.

Could be, that a object style is applied and after pasting to another document the style there with a different the same name is defined differently; e.g. without a drop shadow.

Regards,
Uwe Laubender

( ACP )

EDITED

[Bill Silbert · Accepted solution]

With the frame that is supposed to be showing the drop shadow selected open the effects panel and make sure that the pull-down menu in the top left of the panel is set to Normal. 

[defaultx7e9815pucjb]

For me, the DS wasn't showing up because I was in "Fast Display" mode (must've hit something by a mistake).