Many problems with post features or layout can be resolved by refreshing or resetting the post template, using the Template Editor.
Not all post display problems are caused by unwise use of the Template Editor - some problems may be part of the individual posts. The dashboard Post Template wizard, in Settings - Posts and comments, lets you add a template to the posts - in addition to the "post template".
The "Post Template" added content then appears as part of each new post, in the post editor window.
The "Post Template" wizard, which is frequently used to add fancy signatures and other accents to the posts, contains HTML code, like any other blog component.
If used improperly, the "Post Template" entered code can cause problems with the posts - just as any use of the Post Editor or Template Editor. Be careful here - please don't confuse the dashboard "post template", with the template "post template". The "post template", discussed here, is a small component in the template "post template".
If you just added a fancy post signature or other custom feature or graphic to your posts, and you're now seeing problems with the newer posts, your first instinct might be to reset the post template. Before doing that, why not check the Post Template wizard, at Settings - Posts and comments, and verify what you're adding to your new posts?
This is the Dashboard "Post Template".
Please, don't confuse this with the "post template", in the Template Editor!
If you have code in the "Post Template" box, click "Remove" and remove it. You can always copy the contents, to an old post for instance, before you Remove the contents - should you later decide to try again.
After Removing the contents of the "Post Template" wizard, test your changes by publishing a new post - and see whether the new post is any better than any recent posts, where you observed a problem.
If your new post is successful, you will have to go back and edit each post, by hand, that you published since you last edited the "Post Template" template. Remember also, to clear browser cache, and restart the browser, before checking your old posts for successful correction.
An Important Update
If you did not use a Blogger / Google account when you Followed this blog, years ago, you are probably not Following now . During the past...