There shouldn't be anywhere for chlorine bleach to "hide" from a previous use. How are you adding it to the load when it's used? How are you adding the detergent? Proper method is inside the agitator so it mixes with water under the basket as the machine fills.

I put both detergent and bleach (when I use it) in the agitator part in the middle. I take the cap off and pour it in once some water has started filling the machine. I really do not understand where the bleaching is coming from, but I have ruined a lot of clothes because of it.

Your dosing method sounds OK. Except ... have you already loaded clothes when adding the bleach? There could be some splashing through the slots in the agitator onto the clothes ... although assuming the items in the load are colorfast / bleach-safe, no color change or spotting should occur.

The proscribed method is to slowly/carefully pour bleach using a spouted cup down the agitator along-line with one of the three fins, which presents an unbroken surface area to help guide the bleach down via surface tension and minimize splashing.

Also (almost forgot to mention it), if you have a newer F&P that uses the EcoActive washing action, cut the bleach dosage in HALF if you add it right at the start. Remember that only enough water is used for EcoActive to dissolve the detergent, saturate the clothes, and keep the pump primed for recirculation. A full dose of bleach, 1 cup or whatever, would be VERY strong.

Another method you might try, which is theoretically better for cleaning performance, is add bleach several minutes AFTER the deep wash begins. You can use a full normal dose of bleach in this case. This gives detergent ingredients (particularly enzymes, which are deactivated by chlorine bleach) time to do some work before the bleach hits. Either leave the softener cup out, or carefully remove it, and slowly pour the bleach in. Agitation action will mix it throughout the load.

Many frontloaders dispense bleach into the first rinse, after the detergent solution has done its job and drained away. If you feel up to some button-playing, you can do this by pausing the machine or cutting the power after the wash water has drained (no need to do a spin), and restart it for the shortest wash time, adding bleach at that point (again, a half dose if EcoActive will be run). The short wash (you can use cold water, chlorine bleach doesn't require hot) will become a bleach rinse, followed by normal rinsing.

Anybody in your house using facial cleansers or acne products?

I am not sure why that would be happening but I recently purchased a product that hooks my washing machine and I no longer have to use any type of laundry detergent and I can even mix colors with whites! It works great... I was totally amazed! It is making my clothes softer and the other great thing is it only uses cold water! I think it is the best invention.