I charged the bulbs in my two garage door openers with LEDs a few years back. Afterwards I found that I could open the doors with the remote controls from a distance, but had to be within a few feet of the devices to close them.
After a while I figured out that whenever the lights were on, the remotes barely worked. Once the lights timed out they worked fine.
I swapped the LEDs with another brand and the problem disappeared.
Are you a ham radio operator, or have another application that may make you more sensitive to RFI than other people?