The Strength Glitch is when you use 2 kits at the same time. This is a known bug for a year although there are 2 pretty simple patches.
We prevent this by either disabling the command /kb selectkit and /kitbattle selectkit or checking if the player called the selectkit event 2 times.
In config.yml, its listed as either "block-kitbattle-commands" or "mixing-kits".

The Spiderman glitch is when you use the Spiderman kit to mess with the map. This includes breaking ladders/signs, placing blocks with other kits (like Prisoner and Burrower) and more.
We prevent this by only placing cobwebs if the "block" was identified as air. This is a simple solution and patches about every glitch assoicated with Spiderman.
This is apart of an ability called "SpidermanFixed".

The Dracula glitch is when you keep your deathstreak effects until you die - not when you kill someone. This is basically what I like to call, a lite version of the Strength Glitch. You can do this with any kit you like, and you keep the effects it until you die.
We prevent this by checking if the nearby players have a deathstreak higher then 0, and if they do it will not take any effects off them. This is subject to change over the versions.
If deathstreaks are disabled on your server, you do not need this.
This is apart of an ability called "DraculaFixed".