Options don't save on exit and won't open last saved/edited/opened

Check version

• I'm running the latest version of Path of Building and I've verified this by checking the changelog

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• I've checked for duplicate issues by using the search function of the issue tracker

What is the expected behaviour/value?

Changes made and saved in Options, like using thousands separator, should save and be set next time POB is opened.

POB should default to last build opened/saved on open.

What is the actual behaviour/value?

Any changes made and saved in Options, like using thousands separator, will not save on exit. It resets every time I re-open POB.

Back in 3.14, POB would open to the last build I saved. It didn't do it in 3.15 and it's still not doing it now. It keeps defaulting to a build from 3.13 that I haven't opened/used since then. I thought this would be fixed in 3.15, so I didn't report it until now.

How to reproduce the issue

No response

Build code

Build POB should be opening to: https://pastebin.com/yWC03DPW (build I'm currently working with)

ALWAYS opens to https://pastebin.com/2WQALZtf since 3.15

Screenshots

No response

Beginne damit nachzuverfolgen, wie Änderungen an Options beim Beenden persistiert werden und wie die Anwendung den beim Start geöffneten Build auswählt. Reproduziere beide Fehler mit den gemeldeten erwarteten und tatsächlichen Builds und überprüfe anschließend, dass die Options-Werte persistiert werden und der zuletzt gespeicherte oder geöffnete Build ausgewählt wird.