For some reason, whenever I want to change my equipment in the spidertron engineer equipment grid, be it equipping more exoskeletons or adding/removing batteries, part of my items in the inventory will drop out and onto my surrounding, along with a message saying my inventory is full, which is clearly not before unequipping/re-equipping, is this considered a bug? Didn't crash the game tho, just a bit annoying as the lack of freedom to unequip stuff without having my items dropped onto the floor and picking them up again.

Sounds like a bug, thanks for reporting.

Sorry, I can't replicate this. What other mods are you using?

Im using quite alot of mods, give me a moment to write them down.

Ok, i have since removed Spidertron engineer mod to try out Space Exploration, so i can't recall exactly what mod im using prior to the thread i make. Now the mod has even more problems with Space Exploration after i reinstalled the Spidertron Engineer. I will make another new thread for the new errors. Thank you again for responding.

i believe the problem is also because i make the settings to allow myself to leave the spider for an unlimited amount of time for the factorissm mod so that i can enter/exit the factory. I only remember using some prominent mods like Rampant and Endgame Combat, those are some of the few mods i installed.

I have created a video replicating the inventory error I mentioned before, here's the link: https://drive.google.com/file/d/1lIL23lA0cDpzCsYcoWIuTvtAlnMwUwye/view?usp=sharing

The list of mods I'm currently using:
AAI Industry
Advanced Solar
Advanced Substation
Aircraft
Alien Biomes
Ammo Loader+ By SilentCrim
Beltlayer
Better Air Filtering By Joey
Big Brother
Big Logistic Robot (self ported)
Big Pumpjack
Blueprint Flip And Turn
Broodmother
Clean Save After Removing Rampant Arsenal
Construction Drones
Crafting Speed Research
Creative Mod
Double Inserter - In/Out (self ported)
Dragon Industries - Nauvis Division
Easy Wind Turbines
Enchanted Nuclear
Endgame Combat
Even Distribution
EvenMoreLight by Woetoo
Exoskeleton Mark II
Factorio Library
Factorio Standard Library
Factorissimo2
Fast Remove Tiles And Trees
Faster Drone Charge And Capacity
Fish slurry
Flow Control
Fluid Memory Storage
Fluid Void Extra (0.18)
FARL
Geothermal Vent
Hiladdar's Trains
Hovercrafts
Informatron
Jetpack
K2 Turrets
King's Nuclear Bots
Leighzer's Library
Leighzer's Science Ores
Logistic Memory Storage
Lovely_Santa's Library Of Knowledge
Memory Storage
Mirrored Fluid Inputs/Outputs
Modular Turrets
More Machine Modules
Nihilist Quickstart Belts And Equipment
No Bots Please
Oil Patches Organizer By Apriori Updated For 0.18
Omega Drill
Orbital Solar Power
Pipelayer
Platforms
Pressurized Fluids
Quantized Inserter
Rampant
Rampant Arsenal
RealisticReactors
Reinforced Walls
Repair Turret
Robot Attrition
Robot Mining Site
-----Start Of Schall Mods Listing-----
Schall Ammo turrets
Schall Arachnid platoon
Schall Armoured train
Schall Artillery
Schall Circuit Group
Schall Inserters
Schall Machine Scaling
Schall Missile Command
Schall Overseas Railway
Schall Pickup Tower
Schall Pipe Scaling
Schall Recipe Scaling
Schall Starting Inventory
Schall Tank Platoon
Schall Transport Group
-----end of schall mods listing-----
Side Inserters
Skandragon's Advanced Mining
Solar Walls
Solarthermal Energy
Space Exploration
Space Exploration Graphics
Space Exploration Postprocess
Spidertron Engineer
Spidertron Logistics System
The Ruins Mod
Ultimate Belts
Unlimited Productivity
Upgraded Roboports
Useful Equipment (deprecated, self ported)
Versepelles Aquafarm (self ported)
Vertical Axis Wind Turbines
Void miner 2
Vortik's Armor Plating
Vortik's Armor Reach
Walls Block Spitters
Warehousing Mod
Waterfill
Wind speed Changing

i will try to replicate the error again with lesser mods when i have the time, thank you again!

Ok, new updates on replicating the inventory error. This time I added these mods to replicate the problem

Creative Mod
Exoskeleton Mark II
Spidertron Engineer

This time when I tried equipping the Exoskeleton Mark II equipment, the inventory reduced. The reduction also happened when I equip any vanilla equipment besides exoskeleton while having the Exoskeleton Mark II mod in active. Hope this helps!

Use the creative mod cheats to max your research to get the inventory slots so that the effect will be shown more clearly.

Ok, thanks for the detailed description, I've fixed it for the next update. Basically Exoskeleton Mark II very aggressively sets the player inventory bonus to exactly what it wants whenever you add/remove any piece of armour. This overwrites any other inventory bonuses such as from Creative mod or Spidertron Engineer. I've changed how I assign the inventory bonus to be per-force instead of per-player, so that it is considered a different value and not overwritten (though it might clash with other mods now). This makes more sense anyway as it changes as a result of technology research, which is also per-force.

Thank you so much for the fix! Now I can resume using spidertron engineer after the update.

I've just released 1.6.5 with the bug fix in.