The problem appeared when you changed your format, so its on you, not me. Familysearch.org is no longer the fun it once was. Why would you "fix" something that wasn't broken?
I am just another 'lowly' User/Patron ...
Just in passing ...
It is most likely, your Computer/Browser/Operating System, rather than 'FamilySearch' ...
[ 1 ]
IF, you have not already; THEN ...
An "Oldie"; but, STILL, often, a "Goodie" ...
Have you to tried, 'Clearing', the 'Cookies'; &, the 'Cache', of your 'Browser' (&, even, 'Browsing History'), lately?
It does not always work; but, more often than not it does ...
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What, "Browser"; and, "Operating System", are you using?
And, are the, "Browser"; and, "Operating System", that you are using,
▬ FULLY "Supported", by 'FamilySearch'?; and/or,
[ ie. With the LATEST (or, in the least, the PREVIOUS ] "Versions" of each ... ]
I principally use, the "Browser" of 'Google' "Chrome"; but, also, the "Browsers" of, (Often) 'Mozilla' "FireFox"; and, (Sometimes) 'Microsoft' "Edge", all with the "Operating System", of "Windows 10"; and, all with the LATEST "Versions" of each.
IF, your, "Browser"; and, "Operating System", are NOT using the LATEST (or, in the least, the PREVIOUS ] "Versions", of each; plus, if your "Browser", is NOT fully supported, by 'FamilySearch'; THEN, you may (or, I suggest, WILL) have problems/issues, using 'FamilySearch'.
Just my thoughts.
I hope, that this may help/assist, somewhat.
Here are some "Knowledge Articles", in 'FamilySearch':
I hope, that these may also help/assist, somewhat.