From what I understand you have changed the template of a page. If that is indeed the case then the behavior you are experiencing is such by default. In general every time you change a page's template you will be prompted with a warning message( see the attachment for further reference), telling you that a draft version of the page will be created and will replace your page. This is done in order to not distort your page when a different page template is applied.
If you change a page's template, all of the widgets on that page lose their placeholder ID property, meaning that they do not know in which layout control they are placed. This is visible in the page editor as controls without a placeholder are seen as transparent.
In order to get rid of this behavior, you will need to place all of your controls in a place holder. Add additional placeholders if needed and drag and drop the controls inside them.
Ivan D. Dimitrov
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