PDF conversions are the worst to start from. They (the content) can appear random because it is a 'paste up' format.
Put 'a' there.
Put 'g' there.
put 'b' here.
The RESULTS is the PDF page you see. It looks perfect (because it was what was wanted in the end)
Jon is a
little harsh. Try, then see if it looks fixable (all the pieces are in the proper ORDER), or a basket case

(what you showed, seems fixable)
Then clean up using the Editor (I found doing multiple conversions with different settings, took more time than doing edits using saved 'join' searches. I have 4 or 5, I tweak (to match the code I see) and use, rather than do a 'catch all' pass. This also tends to let me run into other issues, since I look at a lot of the final pages