I can burn multi shows to a disc. It all depends on what format you record in.
If I record a 2h show in SP then it will fill a disc up as its about 4.7GB in size.
If I record a 1h show in SP then I can fit 2 on the disc (as long as the total time is under 2h).
Liteon recorders do not allow re-encoding of files before transfer to disc, if you record for 2h10m in SP you have to crop off 10m before it will fit on a disc.
There is an option to “fit to disc” that makes your recording fit in the space left on a disc.
I think what is happening is that the person that only puts one show on a disc see the message that you must finalize the disc and does that before ejecting. You can keep a disc open and add to it later but when finalized you cannot add any more programs to it.
I can confirm that my Lite-On LVW-5045 will allow multiple recordings to be transferred to DVD-R, -RW, +r and +RW until the disc is full. Even still, it does not automatically finalise the disc until the user manually finalises it. I have tested the copying of different recording qualities and these also copy without any issue, such as copying a 15 minute HQ recording and a 30 minute SP recording to the same disc. When it comes to editing, it is possible to split & merge titles (of same play mode), edit chapters and hide chapters.
Unfortunately, both the 5026 and 5045 US versions have a mono TV tuner and lack TV Guide support , which means that when you schedule a recording, you’ll need to use a VCRPlus+ code or manually set the recording start & stop times. Besides this, it does support repetitive scheduling such as multiple days a week, etc. and time-shifting. As the 5045 and 5026 share most features in common besides a different HDD capacity, my review covers most of their features, with the exception that mines is the EU model, if you are interested in seeing their capabilities.