Insert envelope will not create correct size

I need to print #10 envelopes quite frequently. When I use the “Insert/Envelope” command, it opens fine. I click on #10 Envelope and it displays the size as 9.5"x4.13" which is correct. When I do either the Insert or New Document command, it actually creates an envelope that is 9.5"x6.31". Is there a fix or a workaround for this?

Which version of LO are you using and under which operating system? Both Insert > Envelope… > Format tab > Insert and Insert > Envelope… > Format tab > New Doc. behave as expected here with v4.1.3.2 under GNU/Linux.

I am using v4.1.4.2 on Win7. But it was the same way before I just installed the latest version. I would be happy to send you screen shots if that would help.

This is a duplicate of Envelope page format changes when inserted or modified as indicated by @JohnD.

Take a look at this thread:

Envelope Page Format

I think Bug #52926 fits your situation as well.