The picture shows my problem. The plus icon in the composer is bigger and blocking in the wrong place. I thought it was my own forum’s problem, but when I am editing here, it shows that in this official forum, the composer has the same problem. Can it be my Edge explorer?
Yeah, I know that, it’s ok on my phone too. So is there something I can do with my edge browser 
looks like RTE composer in horizon. i can’t can’t seem to get a repro on any device or browser i use (iOS, MacOS or Linux) but i don’t use Edge, so possibly to do with it.
Do you happen to be on Chromium or Opera? On Linux Mint here, I can’t reproduce the “big blocking plus icon” in Firefox - it only shows up for me in Chromium-based browsers.
A few quick things that did change the symptom on my end:
- Toggle hardware acceleration (on/off) in Chromium/Opera, then restart.
- Try launching once with
--disable-gputo see if it’s the GPU path. - Check
chrome://gpufor any compositing/accelerated canvas issues. - If you’re on Wayland (say you’re using Edge on Linux), test
--ozone-platform=waylandvsx11(or vice-versa). - Reset any zoom/scaling quirks (browser zoom 100%, OS fractional scaling off).
- Try with all extensions disabled (Incognito with no extensions is a quick check).
it helps to share:
- your Distro/DE (e.g. Mint Cinnamon), kernel, and windowing system (X11/Wayland)
- Browser + version (
chrome://version), and whether hardware acceleration is on - GPU + driver (mesa/NVIDIA proprietary)
- Repro steps and a short screen capture
FWIW I’ve sent reports to Google/Opera already; Firefox on Mint renders the composer normally for me, so this looks confined to the Chromium path.