Unexpected for myself, I found decision to solve it!
I just run QSS with sv_protocol 999

Tested on Rubicon 2 and RRP and bug not happened. 

This trick still does not work on
dm4jam_draqu_promeus.bsp
coe1.bsp of Coven of Ebony
e4m7.bsp
some others.
https://i.imgur.com/xxAPJH3.png 

Two of the three maps of this classical mod doesn't load in QSS:

https://www.quaddicted.com/reviews/rrp.html

It loads well with the latest version available of QS. But what's wrong with this mod under QSS?

On OSX, QS cannot load mods from within the game, and cannot quit using the usual command-Q, while QSS can do all these. WTF? 

I love this port apart from that feature. I tried pr_checkextensions 0 but nothing happened. More than anything else I just want to disable the glow effect that happens when your bullets hit a wall. Thanks, hope you can help! 

Sorry, I was using pr_checkextensions 0 in console. Once I put it in config and then loaded the game it worked fine. Thanks for the fantastic port. 

Put this start.ent in your Id folder.
Link is down. 

Referring to Poorchop: I ran into the framedrops with Quakespasm while playing Ad. I made it about half way through the maps then my frames tanked. At first I thought it was my pc, but then I experimented with Spiked and still got the crap framerates. Same with another port I can't remember. I put Fritz into the directory and suddenly my config was reset and the framerate was normal. I just made a fresh Quakespasm folder and put my save in there and all is well. No idea what the cause was or how to replicate it but both Spiked and regular QS were both affected. 

woah wtf... how did i not see this before.

huh... with this, i wouldn't need to have my mod spawn rain drops and create 2gb demo files.

there's a lot to look at here, i hope i have the time to work through this. 

I think there's something wrong with the last quakespasm-spiked release :/

I was playing ww's map for sm107, and there's a rocket launcher that is supposed to fall after you kill some vores (look in this video at 02:41 https://www.youtube.com/watch?v=NLVdlI4rB-A )

With the new version of quakespasm-spiked the rocket-launcher doesn't fall, but with an older version that i have on my PC it works perfectly.

Also, if you play the map "ad_beep1m2" (The Lima Project by Comrade Beep) with the new quakespasm-spiked, the player cant' move at all when you load the map. This issue don't exist if you play with an older version of the engine :P

what's going on? :P 

It would be nice to publish few latest builds of QSS for example, as it is for DP and QS classic. 

Try pr_checkextransion 0 

... pr_checkextension 0 

i thought there was a certain "sv_gameplayfix..." for when a model is touching another entity, and the bottom entity is removed then the gravity applies to the top. I would guess that the RL is sitting on an invisible trigger and once it dies/SOLID_NOT the RL is supposed to fall?? 

I notice that the spiked saved game format includes a bunch of info at the bottom when viewed with a text editor, which makes it not compatible with standard quake. Can this issue be resolved? 

I have found that the latest QSS executable from Oct 17, 2020 does not play the SoA finale cutscene properly. The camera moves underneath the floor and all other scenes after that are not showing what they are supposed to (angles are horribly off).

Can anybody confirm this? I have already reported the issue over at Github. 

And found another issue in the second mission pack. In R2M3, any but the first of the lavamen spawn one floor underneath their pool and move around. They can still be killed, though. Problem does not exist in Quakespasm v0.93.2. 

Yes, I get the same issue with the final cutscene in SoA and the latest QSS build. Works fine with vKQuake. 

In the meantime, I have actually found a third issue, this time even in the original campaign. In E4M7, zombies spawn above the first water pool, floating in mid air above the surface. Looks like QSS isn't as bug-free as I thought. With regular Quakespasm, none of these issues occur. 

I wondered about ceiling zombies too and thought it was sourceport bug or oversight.

But I've checked the DOS gameplay and they really spawn up there on the ceiling. Maybe it's the "original" bug or perhaps some reasoning for that? It's Sandy's map, after all.

Check the video, at 0:57

https://www.youtube.com/watch?v=PczSklJnjtU 

Never noticed that. It's possible that some other source ports like Mark V fixed this and I thought it needs to be like that. Maybe Sandy wanted it like that, even though it still looks wrong to me... 

Yeah, I thought they do that in vanilla. Pretty sure I've had the same with vkQuake (which is my standard engine) and earlier on as well. 

I have an issue with how weapon models are displayed without textures: https://i.imgur.com/JAz7vmY.png

i'm using QuakeSpasm-spiked 0.93.2 (with standard Quake v1.09).. is there some weird display command I might have toggled? 

please ignore above post. problem solved by deleting non-vanilla QRP models. 

Really, tried it once, do not want to go back to your previously favorite engine. It is fast, compatible with all maps and mods, has many features and looked great, but what else is needed to become the best?
There is one sad thing.
Monster, hiding behind trigger activated doors, dyes during door opening, because it touches this door. There is the way to fix this sadly annoying bug? 

I've noticed the same problem as CV in #250 in quite a few maps.

An example can be seen in ad_juz1 where the seeker in a closet right near the start of the map will always self-destruct under rising door. This happens in the dev build and stable, but doesn't occur in quakespasm 0.93.2 or vkquake.