When you handle such complex document (involving field insertion and other advanced features), you must format it strictly and methodically wit paragraph and character styles. Proceeding with direct formatting as you do is the most reliable track to failure (or insurmountable difficulties) in the end.
First page doesn’t display the same here (Fedora 38 Linux, KDE Plasma desktop, LO 7.5.6.2):
- because of different fonts installed, line wrap occurs after “PARA” in your long property
- in this same property, I have initial M and second line with gray highlighting and rest of first line after initial M without highligting
What did you do to the field? This is the first time I meet such a behaviour.
As already mentioned, learn how to use styles if you hope for consistent formatting. It is much easier to do it with them compared to direct formatting. Read the Writer Guide for an introduction to the concept and practice a bit to get familiar with the effects.
Your “background” image is inserted just like you’d do it for an illustration accompanying text. To avoid difficulties (every time you presently click on the page not directly on text, you select the image), follow @LeroyG’s advice to really put the image in the page background so that it no longer reacts to clicks. What you did was only to send it below the text (text background) but it is still click-sensitive.
Your image is anchored To page. It happens that in this case this is logically correct because you want it to appear only on page 1 but this anchor mode is erroneous in 99% of the cases because it is a DTP-like mode. The behaviour is absolutely not what newbies think it is. It is preferable to insert it in the page background (follow @LeroyG’s procedure).