IPad double spacing in FaceBook posts

I had this problem once before and I don’t remember how it was corrected. I am thinking I caused it by hitting too many keys on the touch screen all at once. While in FaceBook, commenting on a post, as I type I get 2 spaces between words. This only happens in FaceBook, and only in posts. It is also limited to my IPads not my Android, and not on FaceBook mobile. It is not IOS specific or IPad specific. It does not matter which IPad I use, when signed in under my name it happens, under another name it does not happen. This leads me to believe it is a FaceBook/IPad setting issue. If I remember correctly I found a post that told me to press 2 keys and it fixed it. I don’t remember the keys or the post. Any helpful answers would be appreciated. Thanks.